From 3bfc5b83ef878105f2cb91400c4544238f0a9491 Mon Sep 17 00:00:00 2001
From: Fabio Manganiello <info@fabiomanganiello.com>
Date: Thu, 16 Sep 2021 17:53:40 +0200
Subject: [PATCH] Moved to manifest files for describing plugins and backends
 and their dependencies

---
 MANIFEST.in                                   |   1 +
 bin/platyvenv                                 | 174 +++++-----
 docs/source/backends.rst                      |   5 -
 docs/source/conf.py                           |   2 +-
 docs/source/plugins.rst                       |  15 -
 generate_missing_docs.py                      |  17 +-
 platypush/backend/__init__.py                 |   4 +-
 .../adafruit/{io.py => io/__init__.py}        |  11 +-
 platypush/backend/adafruit/io/manifest.yaml   |  12 +
 .../backend/{alarm.py => alarm/__init__.py}   |   0
 platypush/backend/alarm/manifest.yaml         |  10 +
 platypush/backend/assistant/__init__.py       |   1 +
 .../{google.py => google/__init__.py}         |   0
 .../backend/assistant/google/manifest.yaml    |  26 ++
 .../backend/assistant/snowboy/manifest.yaml   |   9 +
 platypush/backend/bluetooth/__init__.py       |   2 +-
 .../{fileserver.py => fileserver/__init__.py} |   0
 .../bluetooth/fileserver/manifest.yaml        |   8 +
 .../{pushserver.py => pushserver/__init__.py} |   0
 .../bluetooth/pushserver/manifest.yaml        |   8 +
 .../scanner/{ble.py => ble/__init__.py}       |   0
 .../bluetooth/scanner/ble/manifest.yaml       |  10 +
 .../backend/bluetooth/scanner/manifest.yaml   |  10 +
 platypush/backend/button/flic/__init__.py     |   9 +-
 .../backend/button/flic/fliclib/aioflic.py    |   1 +
 platypush/backend/button/flic/manifest.yaml   |   9 +
 .../backend/camera/{pi.py => pi/__init__.py}  |   1 -
 platypush/backend/camera/pi/manifest.yaml     |   7 +
 .../{telegram.py => telegram/__init__.py}     |   0
 platypush/backend/chat/telegram/manifest.yaml |  19 ++
 .../{clipboard.py => clipboard/__init__.py}   |   0
 platypush/backend/clipboard/manifest.yaml     |   8 +
 .../{covid19.py => covid19/__init__.py}       |   0
 platypush/backend/covid19/manifest.yaml       |   7 +
 .../backend/{dbus.py => dbus/__init__.py}     |   0
 platypush/backend/dbus/manifest.yaml          |   7 +
 platypush/backend/file/monitor/manifest.yaml  |  10 +
 .../{foursquare.py => foursquare/__init__.py} |   0
 platypush/backend/foursquare/manifest.yaml    |   8 +
 .../backend/{github.py => github/__init__.py} |   0
 platypush/backend/github/manifest.yaml        |  32 ++
 .../google/{fit.py => fit/__init__.py}        |   0
 platypush/backend/google/fit/manifest.yaml    |   8 +
 .../google/{pubsub.py => pubsub/__init__.py}  |   0
 platypush/backend/google/pubsub/manifest.yaml |   9 +
 platypush/backend/{gps.py => gps/__init__.py} |   0
 platypush/backend/gps/manifest.yaml           |  16 +
 platypush/backend/http/__init__.py            |  15 +-
 .../app/routes/plugins/camera/ir/mlx90640.py  |   2 +-
 .../http/app/routes/plugins/camera/pi.py      |   2 +-
 .../http/app/routes/plugins/media/__init__.py |   2 +-
 platypush/backend/http/manifest.yaml          |   9 +
 .../backend/http/media/handlers/__init__.py   |   3 +-
 platypush/backend/http/poll/__init__.py       |   2 +-
 platypush/backend/http/poll/manifest.yaml     |   6 +
 .../backend/http/request/ota/__init__.py      |   0
 .../http/request/ota/booking/__init__.py      |  48 ---
 .../backend/http/request/rss/__init__.py      |   5 +-
 .../{inotify.py => inotify/__init__.py}       |   0
 platypush/backend/inotify/manifest.yaml       |  15 +
 .../{jstest.py => jstest/__init__.py}         |   0
 .../backend/joystick/jstest/manifest.yaml     |  21 ++
 .../joystick/{linux.py => linux/__init__.py}  |   0
 .../backend/joystick/linux/manifest.yaml      |  16 +
 platypush/backend/joystick/manifest.yaml      |   8 +
 platypush/backend/kafka/__init__.py           |   1 -
 platypush/backend/kafka/manifest.yaml         |   7 +
 .../backend/light/{hue.py => hue/__init__.py} |   0
 platypush/backend/light/hue/manifest.yaml     |   8 +
 .../backend/{linode.py => linode/__init__.py} |   0
 platypush/backend/linode/manifest.yaml        |   8 +
 .../backend/log/{http.py => http/__init__.py} |   0
 platypush/backend/log/http/manifest.yaml      |   8 +
 .../backend/{mail.py => mail/__init__.py}     |   0
 platypush/backend/mail/manifest.yaml          |  10 +
 .../backend/{midi.py => midi/__init__.py}     |   2 +-
 platypush/backend/midi/manifest.yaml          |   8 +
 .../backend/{mqtt.py => mqtt/__init__.py}     |   0
 platypush/backend/mqtt/manifest.yaml          |   9 +
 .../music/{mopidy.py => mopidy/__init__.py}   |   7 +-
 platypush/backend/music/mopidy/manifest.yaml  |  17 +
 platypush/backend/music/mpd/manifest.yaml     |  16 +
 .../{snapcast.py => snapcast/__init__.py}     |   0
 .../backend/music/snapcast/manifest.yaml      |  15 +
 platypush/backend/music/spotify/manifest.yaml |  21 ++
 .../{nextcloud.py => nextcloud/__init__.py}   |   0
 platypush/backend/nextcloud/manifest.yaml     |  10 +
 platypush/backend/{nfc.py => nfc/__init__.py} |   0
 platypush/backend/nfc/manifest.yaml           |  13 +
 platypush/backend/nodered/__init__.py         |   1 +
 platypush/backend/nodered/manifest.yaml       |   7 +
 .../backend/{ping.py => ping/__init__.py}     |   0
 platypush/backend/ping/manifest.yaml          |   8 +
 platypush/backend/pushbullet/__init__.py      |  45 +--
 platypush/backend/pushbullet/manifest.yaml    |   8 +
 .../backend/{redis.py => redis/__init__.py}   |   5 -
 platypush/backend/redis/manifest.yaml         |   6 +
 platypush/backend/scard/__init__.py           |  15 +-
 platypush/backend/scard/manifest.yaml         |   9 +
 platypush/backend/sensor/__init__.py          |   1 +
 platypush/backend/sensor/accelerometer.py     |  18 --
 .../backend/sensor/accelerometer/__init__.py  |  27 ++
 .../sensor/accelerometer/manifest.yaml        |  13 +
 platypush/backend/sensor/arduino.py           |  18 --
 platypush/backend/sensor/arduino/__init__.py  |  26 ++
 .../backend/sensor/arduino/manifest.yaml      |  12 +
 .../{battery.py => battery/__init__.py}       |   9 +
 .../backend/sensor/battery/manifest.yaml      |  13 +
 .../sensor/{bme280.py => bme280/__init__.py}  |   9 +
 platypush/backend/sensor/bme280/manifest.yaml |  13 +
 .../sensor/{dht.py => dht/__init__.py}        |   8 +
 platypush/backend/sensor/dht/manifest.yaml    |  13 +
 platypush/backend/sensor/distance/__init__.py |   9 +
 .../backend/sensor/distance/manifest.yaml     |  13 +
 .../{vl53l1x.py => vl53l1x/__init__.py}       |   9 +
 .../sensor/distance/vl53l1x/manifest.yaml     |  14 +
 .../{envirophat.py => envirophat/__init__.py} |   9 +
 .../backend/sensor/envirophat/manifest.yaml   |  13 +
 .../backend/sensor/ir/zeroborg/manifest.yaml  |   8 +
 .../sensor/{leap.py => leap/__init__.py}      |   0
 platypush/backend/sensor/leap/manifest.yaml   |  15 +
 .../sensor/{ltr559.py => ltr559/__init__.py}  |   9 +
 platypush/backend/sensor/ltr559/manifest.yaml |  13 +
 .../{mcp3008.py => mcp3008/__init__.py}       |   9 +
 .../backend/sensor/mcp3008/manifest.yaml      |  13 +
 .../backend/sensor/motion/pmw3901/__init__.py |  33 ++
 .../sensor/motion/pmw3901/manifest.yaml       |  13 +
 platypush/backend/sensor/motion/pwm3901.py    |  24 --
 platypush/backend/sensor/serial.py            |  18 --
 platypush/backend/sensor/serial/__init__.py   |  27 ++
 platypush/backend/sensor/serial/manifest.yaml |  12 +
 .../{deepspeech.py => deepspeech/__init__.py} |   0
 .../backend/stt/deepspeech/manifest.yaml      |   6 +
 .../{hotword.py => hotword/__init__.py}       |   0
 .../stt/picovoice/hotword/manifest.yaml       |   6 +
 .../{speech.py => speech/__init__.py}         |   0
 .../stt/picovoice/speech/manifest.yaml        |   6 +
 platypush/backend/{tcp.py => tcp/__init__.py} |   0
 platypush/backend/tcp/manifest.yaml           |   6 +
 .../{todoist.py => todoist/__init__.py}       |   1 -
 platypush/backend/todoist/manifest.yaml       |  16 +
 .../{travisci.py => travisci/__init__.py}     |   0
 platypush/backend/travisci/manifest.yaml      |  10 +
 .../backend/{trello.py => trello/__init__.py} |   2 -
 platypush/backend/trello/manifest.yaml        |  10 +
 platypush/backend/weather/__init__.py         |   3 +-
 .../{buienradar.py => buienradar/__init__.py} |   0
 .../backend/weather/buienradar/manifest.yaml  |   8 +
 .../{darksky.py => darksky/__init__.py}       |   0
 .../backend/weather/darksky/manifest.yaml     |   8 +
 .../__init__.py}                              |   0
 .../weather/openweathermap/manifest.yaml      |   8 +
 .../{websocket.py => websocket/__init__.py}   |  30 +-
 platypush/backend/websocket/manifest.yaml     |   6 +
 .../{wiimote.py => wiimote/__init__.py}       |  32 +-
 platypush/backend/wiimote/manifest.yaml       |   8 +
 .../zigbee/{mqtt.py => mqtt/__init__.py}      |   0
 platypush/backend/zigbee/mqtt/manifest.yaml   |  45 +++
 platypush/backend/zwave/manifest.yaml         |  48 +++
 .../zwave/{mqtt.py => mqtt/__init__.py}       |   0
 platypush/backend/zwave/mqtt/manifest.yaml    |  20 ++
 platypush/bus/__init__.py                     |   2 +-
 platypush/common/__init__.py                  |  17 +
 platypush/config/__init__.py                  |  32 +-
 platypush/event/hook.py                       |   2 +-
 platypush/message/event/adafruit.py           |   4 +-
 .../message/event/button/flic/__init__.py     |  10 +-
 platypush/message/event/chat/slack.py         |   6 +-
 platypush/message/event/joystick.py           |   4 +-
 platypush/message/event/video/__init__.py     |   1 -
 platypush/platydock/__init__.py               | 201 +++++++-----
 platypush/plugins/__init__.py                 |   6 +-
 .../adafruit/{io.py => io/__init__.py}        |   8 +-
 platypush/plugins/adafruit/io/manifest.yaml   |   7 +
 .../plugins/{alarm.py => alarm/__init__.py}   |   0
 platypush/plugins/alarm/manifest.yaml         |   6 +
 .../{arduino.py => arduino/__init__.py}       |   0
 platypush/plugins/arduino/manifest.yaml       |   7 +
 .../plugins/assistant/echo/manifest.yaml      |  13 +
 .../plugins/assistant/google/manifest.yaml    |   6 +
 .../{pushtotalk.py => pushtotalk/__init__.py} |   0
 .../assistant/google/pushtotalk/manifest.yaml |  14 +
 .../{autoremote.py => autoremote/__init__.py} |  14 +-
 platypush/plugins/autoremote/manifest.yaml    |   6 +
 platypush/plugins/bluetooth/__init__.py       |   2 +
 .../bluetooth/{ble.py => ble/__init__.py}     |   0
 platypush/plugins/bluetooth/ble/manifest.yaml |   8 +
 platypush/plugins/bluetooth/manifest.yaml     |   8 +
 platypush/plugins/calendar/__init__.py        |   3 -
 .../calendar/{ical.py => ical/__init__.py}    |  21 +-
 platypush/plugins/calendar/ical/manifest.yaml |   7 +
 platypush/plugins/calendar/manifest.yaml      |   6 +
 platypush/plugins/camera/__init__.py          |   1 +
 .../android/{ipcam.py => ipcam/__init__.py}   |   0
 .../camera/android/ipcam/manifest.yaml        |   6 +
 .../plugins/camera/{cv.py => cv/__init__.py}  |   0
 platypush/plugins/camera/cv/manifest.yaml     |   8 +
 platypush/plugins/camera/ffmpeg/manifest.yaml |   9 +
 .../plugins/camera/gstreamer/__init__.py      |  10 +-
 .../plugins/camera/gstreamer/manifest.yaml    |  12 +
 .../plugins/camera/ir/mlx90640/manifest.yaml  |   9 +
 platypush/plugins/camera/pi/manifest.yaml     |   9 +
 .../{telegram.py => telegram/__init__.py}     |   0
 platypush/plugins/chat/telegram/manifest.yaml |   7 +
 .../{clipboard.py => clipboard/__init__.py}   |   0
 platypush/plugins/clipboard/manifest.yaml     |   7 +
 .../plugins/{config.py => config/__init__.py} |   4 +
 platypush/plugins/config/manifest.yaml        |   6 +
 .../{covid19.py => covid19/__init__.py}       |   0
 platypush/plugins/covid19/manifest.yaml       |   6 +
 platypush/plugins/{csv.py => csv/__init__.py} |   5 +-
 platypush/plugins/csv/manifest.yaml           |   6 +
 platypush/plugins/db/__init__.py              |  28 +-
 platypush/plugins/db/manifest.yaml            |   6 +
 .../plugins/{dbus.py => dbus/__init__.py}     |   0
 platypush/plugins/dbus/manifest.yaml          |   7 +
 .../{dropbox.py => dropbox/__init__.py}       |   0
 platypush/plugins/dropbox/manifest.yaml       |   7 +
 platypush/plugins/esp/__init__.py             |  32 +-
 platypush/plugins/esp/manifest.yaml           |   6 +
 .../plugins/{ffmpeg.py => ffmpeg/__init__.py} |   0
 platypush/plugins/ffmpeg/manifest.yaml        |  11 +
 .../plugins/{file.py => file/__init__.py}     |   0
 platypush/plugins/file/manifest.yaml          |   6 +
 .../{foursquare.py => foursquare/__init__.py} |   0
 platypush/plugins/foursquare/manifest.yaml    |   6 +
 .../{calendar.py => calendar/__init__.py}     |   8 +-
 .../plugins/google/calendar/manifest.yaml     |   8 +
 .../google/{drive.py => drive/__init__.py}    |   6 +
 platypush/plugins/google/drive/manifest.yaml  |   8 +
 .../google/{fit.py => fit/__init__.py}        |  10 +-
 platypush/plugins/google/fit/manifest.yaml    |   8 +
 .../google/{mail.py => mail/__init__.py}      |   6 +
 platypush/plugins/google/mail/manifest.yaml   |   8 +
 .../google/{maps.py => maps/__init__.py}      |   6 +
 platypush/plugins/google/maps/manifest.yaml   |   8 +
 .../google/{pubsub.py => pubsub/__init__.py}  |   3 +
 platypush/plugins/google/pubsub/manifest.yaml |   9 +
 .../{translate.py => translate/__init__.py}   |   2 +
 .../plugins/google/translate/manifest.yaml    |   9 +
 .../{youtube.py => youtube/__init__.py}       |   8 +-
 .../plugins/google/youtube/manifest.yaml      |   8 +
 platypush/plugins/gpio/__init__.py            |   3 +-
 platypush/plugins/gpio/manifest.yaml          |   7 +
 platypush/plugins/gpio/sensor/__init__.py     |   2 +-
 .../gpio/sensor/accelerometer/__init__.py     |   6 +-
 .../gpio/sensor/accelerometer/lib/LIS3DH.py   |   2 +-
 .../gpio/sensor/accelerometer/manifest.yaml   |   7 +
 .../sensor/{bme280.py => bme280/__init__.py}  |   0
 .../plugins/gpio/sensor/bme280/manifest.yaml  |   7 +
 .../gpio/sensor/{dht.py => dht/__init__.py}   |   3 +-
 .../plugins/gpio/sensor/dht/manifest.yaml     |   7 +
 .../gpio/sensor/distance/manifest.yaml        |   9 +
 .../{vl53l1x.py => vl53l1x/__init__.py}       |   0
 .../sensor/distance/vl53l1x/manifest.yaml     |   8 +
 .../{envirophat.py => envirophat/__init__.py} |   0
 .../gpio/sensor/envirophat/manifest.yaml      |   7 +
 .../sensor/{ltr559.py => ltr559/__init__.py}  |   0
 .../plugins/gpio/sensor/ltr559/manifest.yaml  |   7 +
 .../plugins/gpio/sensor/mcp3008/manifest.yaml |   7 +
 .../{pwm3901.py => pmw3901/__init__.py}       |   6 +-
 .../gpio/sensor/motion/pmw3901/manifest.yaml  |   7 +
 .../plugins/gpio/zeroborg/lib/__init__.py     |   2 +-
 platypush/plugins/gpio/zeroborg/manifest.yaml |   8 +
 .../{graphite.py => graphite/__init__.py}     |   1 +
 platypush/plugins/graphite/manifest.yaml      |   6 +
 platypush/plugins/homeseer.py                 | 101 ------
 platypush/plugins/http/request/__init__.py    |  16 +-
 platypush/plugins/http/request/manifest.yaml  |   6 +
 .../http/request/{rss.py => rss/__init__.py}  |   0
 .../plugins/http/request/rss/manifest.yaml    |   7 +
 platypush/plugins/http/webpage/__init__.py    |   7 +-
 platypush/plugins/http/webpage/manifest.yaml  |   7 +
 .../plugins/{ifttt.py => ifttt/__init__.py}   |   4 -
 platypush/plugins/ifttt/manifest.yaml         |   6 +
 .../plugins/{inputs.py => inputs/__init__.py} |   0
 platypush/plugins/inputs/manifest.yaml        |   7 +
 .../{inspect.py => inspect/__init__.py}       |   0
 platypush/plugins/inspect/manifest.yaml       |   7 +
 .../plugins/{kafka.py => kafka/__init__.py}   |   0
 platypush/plugins/kafka/manifest.yaml         |   9 +
 platypush/plugins/lastfm/__init__.py          |  31 +-
 platypush/plugins/lastfm/manifest.yaml        |   7 +
 .../plugins/lcd/{gpio.py => gpio/__init__.py} |   0
 platypush/plugins/lcd/gpio/manifest.yaml      |   8 +
 .../plugins/lcd/{i2c.py => i2c/__init__.py}   |   4 +
 platypush/plugins/lcd/i2c/manifest.yaml       |   8 +
 platypush/plugins/light/__init__.py           |   5 +-
 platypush/plugins/light/hue/manifest.yaml     |  11 +
 .../plugins/{linode.py => linode/__init__.py} |   0
 platypush/plugins/linode/manifest.yaml        |   7 +
 .../plugins/{logger.py => logger/__init__.py} |   0
 platypush/plugins/logger/manifest.yaml        |   6 +
 .../luma/{oled.py => oled/__init__.py}        |   4 +-
 platypush/plugins/luma/oled/manifest.yaml     |   7 +
 platypush/plugins/mail/__init__.py            |   7 +-
 .../mail/{imap.py => imap/__init__.py}        |   0
 platypush/plugins/mail/imap/manifest.yaml     |   7 +
 .../mail/{smtp.py => smtp/__init__.py}        |   0
 platypush/plugins/mail/smtp/manifest.yaml     |   6 +
 platypush/plugins/media/__init__.py           |  25 +-
 .../{chromecast.py => chromecast/__init__.py} |   6 +
 .../plugins/media/chromecast/manifest.yaml    |   7 +
 platypush/plugins/media/gstreamer/__init__.py |  19 +-
 .../plugins/media/gstreamer/manifest.yaml     |  12 +
 .../media/{kodi.py => kodi/__init__.py}       |  22 +-
 platypush/plugins/media/kodi/manifest.yaml    |   7 +
 .../media/{mplayer.py => mplayer/__init__.py} |  14 +-
 platypush/plugins/media/mplayer/manifest.yaml |   9 +
 .../plugins/media/{mpv.py => mpv/__init__.py} |   0
 platypush/plugins/media/mpv/manifest.yaml     |  11 +
 .../{omxplayer.py => omxplayer/__init__.py}   |  13 +-
 .../plugins/media/omxplayer/manifest.yaml     |   9 +
 .../media/{plex.py => plex/__init__.py}       |   2 +-
 platypush/plugins/media/plex/manifest.yaml    |   7 +
 platypush/plugins/media/search/local.py       |   4 -
 .../{subtitles.py => subtitles/__init__.py}   |   2 +-
 .../plugins/media/subtitles/manifest.yaml     |   8 +
 .../plugins/media/{vlc.py => vlc/__init__.py} |   0
 platypush/plugins/media/vlc/manifest.yaml     |  11 +
 .../{webtorrent.py => webtorrent/__init__.py} |  40 ++-
 .../plugins/media/webtorrent/manifest.yaml    |   6 +
 .../plugins/{midi.py => midi/__init__.py}     |  32 +-
 platypush/plugins/midi/manifest.yaml          |   7 +
 .../plugins/ml/{cv.py => cv/__init__.py}      |   0
 platypush/plugins/ml/cv/manifest.yaml         |   8 +
 platypush/plugins/mobile/join/__init__.py     |   2 +-
 platypush/plugins/mobile/join/manifest.yaml   |   6 +
 .../plugins/{mqtt.py => mqtt/__init__.py}     |   2 +-
 platypush/plugins/mqtt/manifest.yaml          |   7 +
 platypush/plugins/music/mpd/manifest.yaml     |   7 +
 .../{snapcast.py => snapcast/__init__.py}     |   3 +-
 .../plugins/music/snapcast/manifest.yaml      |   6 +
 .../music/{spotify.py => spotify/__init__.py} |   0
 platypush/plugins/music/spotify/manifest.yaml |   6 +
 .../{nextcloud.py => nextcloud/__init__.py}   |   2 +-
 platypush/plugins/nextcloud/manifest.yaml     |   7 +
 .../plugins/{nmap.py => nmap/__init__.py}     |   0
 platypush/plugins/nmap/manifest.yaml          |   6 +
 platypush/plugins/{otp.py => otp/__init__.py} |   0
 platypush/plugins/otp/manifest.yaml           |   7 +
 .../plugins/{pihole.py => pihole/__init__.py} |   0
 platypush/plugins/pihole/manifest.yaml        |   6 +
 .../plugins/{ping.py => ping/__init__.py}     |   0
 platypush/plugins/ping/manifest.yaml          |   6 +
 .../printer/{cups.py => cups/__init__.py}     |   0
 platypush/plugins/printer/cups/manifest.yaml  |   7 +
 .../{pushbullet.py => pushbullet/__init__.py} |   4 +-
 platypush/plugins/pushbullet/manifest.yaml    |   6 +
 .../pwm/{pca9685.py => pca9685/__init__.py}   |   5 +
 platypush/plugins/pwm/pca9685/manifest.yaml   |   7 +
 .../plugins/{qrcode.py => qrcode/__init__.py} |  10 +-
 platypush/plugins/qrcode/manifest.yaml        |  10 +
 .../plugins/{redis.py => redis/__init__.py}   |   4 -
 platypush/plugins/redis/manifest.yaml         |   6 +
 .../{rtorrent.py => rtorrent/__init__.py}     |   0
 platypush/plugins/rtorrent/manifest.yaml      |  23 ++
 platypush/plugins/sensor/__init__.py          |   6 +-
 platypush/plugins/serial/manifest.yaml        |   6 +
 platypush/plugins/shell/manifest.yaml         |   6 +
 .../plugins/{slack.py => slack/__init__.py}   |  13 +-
 platypush/plugins/slack/manifest.yaml         |  14 +
 .../__init__.py}                              |   0
 platypush/plugins/smartthings/manifest.yaml   |   7 +
 platypush/plugins/sound/__init__.py           |   7 +-
 platypush/plugins/sound/core.py               |  47 ++-
 platypush/plugins/sound/manifest.yaml         |  15 +
 platypush/plugins/ssh/__init__.py             |   9 +-
 platypush/plugins/ssh/manifest.yaml           |   7 +
 .../{deepspeech.py => deepspeech/__init__.py} |   0
 .../plugins/stt/deepspeech/manifest.yaml      |   9 +
 .../{hotword.py => hotword/__init__.py}       |   0
 .../stt/picovoice/hotword/manifest.yaml       |   7 +
 .../{speech.py => speech/__init__.py}         |   0
 .../stt/picovoice/speech/manifest.yaml        |   7 +
 platypush/plugins/{sun.py => sun/__init__.py} |   0
 platypush/plugins/sun/manifest.yaml           |   8 +
 platypush/plugins/switch/__init__.py          |   7 +-
 .../switch/{tplink.py => tplink/__init__.py}  |   0
 platypush/plugins/switch/tplink/manifest.yaml |   7 +
 platypush/plugins/switch/wemo/__init__.py     |   4 -
 platypush/plugins/switch/wemo/manifest.yaml   |   6 +
 .../{bluetooth.py => bluetooth/__init__.py}   |   0
 .../plugins/switchbot/bluetooth/manifest.yaml |  13 +
 platypush/plugins/switchbot/manifest.yaml     |   6 +
 platypush/plugins/system/manifest.yaml        |   8 +
 platypush/plugins/{tcp.py => tcp/__init__.py} |   0
 platypush/plugins/tcp/manifest.yaml           |   6 +
 platypush/plugins/tensorflow/manifest.yaml    |  22 ++
 .../{todoist.py => todoist/__init__.py}       |   0
 platypush/plugins/todoist/manifest.yaml       |   7 +
 .../{torrent.py => torrent/__init__.py}       |   4 +-
 platypush/plugins/torrent/manifest.yaml       |   7 +
 .../{travisci.py => travisci/__init__.py}     |   0
 platypush/plugins/travisci/manifest.yaml      |   6 +
 .../plugins/{trello.py => trello/__init__.py} |   0
 platypush/plugins/trello/manifest.yaml        |   7 +
 platypush/plugins/tts/__init__.py             |   2 +-
 .../tts/{google.py => google/__init__.py}     |   3 +-
 platypush/plugins/tts/google/manifest.yaml    |   7 +
 platypush/plugins/tts/manifest.yaml           |   6 +
 .../tv/samsung/{ws.py => ws/__init__.py}      |   0
 platypush/plugins/tv/samsung/ws/manifest.yaml |   7 +
 .../plugins/{twilio.py => twilio/__init__.py} |   0
 platypush/plugins/twilio/manifest.yaml        |   7 +
 platypush/plugins/{udp.py => udp/__init__.py} |   0
 platypush/plugins/udp/manifest.yaml           |   6 +
 .../plugins/{user.py => user/__init__.py}     |   0
 platypush/plugins/user/manifest.yaml          |   6 +
 .../plugins/{utils.py => utils/__init__.py}   |   0
 platypush/plugins/utils/manifest.yaml         |   6 +
 .../{variable.py => variable/__init__.py}     |   5 -
 platypush/plugins/variable/manifest.yaml      |   6 +
 platypush/plugins/weather/__init__.py         |   3 +-
 .../{buienradar.py => buienradar/__init__.py} |   0
 .../plugins/weather/buienradar/manifest.yaml  |   7 +
 .../{darksky.py => darksky/__init__.py}       |   0
 .../plugins/weather/darksky/manifest.yaml     |   6 +
 .../__init__.py}                              |   2 +-
 .../weather/openweathermap/manifest.yaml      |   6 +
 .../{websocket.py => websocket/__init__.py}   |  13 +-
 platypush/plugins/websocket/manifest.yaml     |   6 +
 .../{wiimote.py => wiimote/__init__.py}       |   0
 platypush/plugins/wiimote/manifest.yaml       |   6 +
 .../{zeroconf.py => zeroconf/__init__.py}     |   0
 platypush/plugins/zeroconf/manifest.yaml      |  13 +
 .../zigbee/{mqtt.py => mqtt/__init__.py}      |   0
 platypush/plugins/zigbee/mqtt/manifest.yaml   |   7 +
 platypush/plugins/zwave/_base.py              |  70 +++-
 platypush/plugins/zwave/manifest.yaml         |   7 +
 .../zwave/{mqtt.py => mqtt/__init__.py}       |   0
 platypush/plugins/zwave/mqtt/manifest.yaml    |   7 +
 platypush/user/__init__.py                    |  21 +-
 platypush/utils/__init__.py                   |  14 +-
 platypush/utils/manifest.py                   | 200 ++++++++++++
 requirements.txt                              | 305 +-----------------
 setup.py                                      |  21 +-
 437 files changed, 3139 insertions(+), 1121 deletions(-)
 rename platypush/backend/adafruit/{io.py => io/__init__.py} (90%)
 create mode 100644 platypush/backend/adafruit/io/manifest.yaml
 rename platypush/backend/{alarm.py => alarm/__init__.py} (100%)
 create mode 100644 platypush/backend/alarm/manifest.yaml
 rename platypush/backend/assistant/{google.py => google/__init__.py} (100%)
 create mode 100644 platypush/backend/assistant/google/manifest.yaml
 create mode 100644 platypush/backend/assistant/snowboy/manifest.yaml
 rename platypush/backend/bluetooth/{fileserver.py => fileserver/__init__.py} (100%)
 create mode 100644 platypush/backend/bluetooth/fileserver/manifest.yaml
 rename platypush/backend/bluetooth/{pushserver.py => pushserver/__init__.py} (100%)
 create mode 100644 platypush/backend/bluetooth/pushserver/manifest.yaml
 rename platypush/backend/bluetooth/scanner/{ble.py => ble/__init__.py} (100%)
 create mode 100644 platypush/backend/bluetooth/scanner/ble/manifest.yaml
 create mode 100644 platypush/backend/bluetooth/scanner/manifest.yaml
 create mode 100644 platypush/backend/button/flic/manifest.yaml
 rename platypush/backend/camera/{pi.py => pi/__init__.py} (98%)
 create mode 100644 platypush/backend/camera/pi/manifest.yaml
 rename platypush/backend/chat/{telegram.py => telegram/__init__.py} (100%)
 create mode 100644 platypush/backend/chat/telegram/manifest.yaml
 rename platypush/backend/{clipboard.py => clipboard/__init__.py} (100%)
 create mode 100644 platypush/backend/clipboard/manifest.yaml
 rename platypush/backend/{covid19.py => covid19/__init__.py} (100%)
 create mode 100644 platypush/backend/covid19/manifest.yaml
 rename platypush/backend/{dbus.py => dbus/__init__.py} (100%)
 create mode 100644 platypush/backend/dbus/manifest.yaml
 create mode 100644 platypush/backend/file/monitor/manifest.yaml
 rename platypush/backend/{foursquare.py => foursquare/__init__.py} (100%)
 create mode 100644 platypush/backend/foursquare/manifest.yaml
 rename platypush/backend/{github.py => github/__init__.py} (100%)
 create mode 100644 platypush/backend/github/manifest.yaml
 rename platypush/backend/google/{fit.py => fit/__init__.py} (100%)
 create mode 100644 platypush/backend/google/fit/manifest.yaml
 rename platypush/backend/google/{pubsub.py => pubsub/__init__.py} (100%)
 create mode 100644 platypush/backend/google/pubsub/manifest.yaml
 rename platypush/backend/{gps.py => gps/__init__.py} (100%)
 create mode 100644 platypush/backend/gps/manifest.yaml
 create mode 100644 platypush/backend/http/manifest.yaml
 create mode 100644 platypush/backend/http/poll/manifest.yaml
 delete mode 100644 platypush/backend/http/request/ota/__init__.py
 delete mode 100644 platypush/backend/http/request/ota/booking/__init__.py
 rename platypush/backend/{inotify.py => inotify/__init__.py} (100%)
 create mode 100644 platypush/backend/inotify/manifest.yaml
 rename platypush/backend/joystick/{jstest.py => jstest/__init__.py} (100%)
 create mode 100644 platypush/backend/joystick/jstest/manifest.yaml
 rename platypush/backend/joystick/{linux.py => linux/__init__.py} (100%)
 create mode 100644 platypush/backend/joystick/linux/manifest.yaml
 create mode 100644 platypush/backend/joystick/manifest.yaml
 create mode 100644 platypush/backend/kafka/manifest.yaml
 rename platypush/backend/light/{hue.py => hue/__init__.py} (100%)
 create mode 100644 platypush/backend/light/hue/manifest.yaml
 rename platypush/backend/{linode.py => linode/__init__.py} (100%)
 create mode 100644 platypush/backend/linode/manifest.yaml
 rename platypush/backend/log/{http.py => http/__init__.py} (100%)
 create mode 100644 platypush/backend/log/http/manifest.yaml
 rename platypush/backend/{mail.py => mail/__init__.py} (100%)
 create mode 100644 platypush/backend/mail/manifest.yaml
 rename platypush/backend/{midi.py => midi/__init__.py} (98%)
 create mode 100644 platypush/backend/midi/manifest.yaml
 rename platypush/backend/{mqtt.py => mqtt/__init__.py} (100%)
 create mode 100644 platypush/backend/mqtt/manifest.yaml
 rename platypush/backend/music/{mopidy.py => mopidy/__init__.py} (98%)
 create mode 100644 platypush/backend/music/mopidy/manifest.yaml
 create mode 100644 platypush/backend/music/mpd/manifest.yaml
 rename platypush/backend/music/{snapcast.py => snapcast/__init__.py} (100%)
 create mode 100644 platypush/backend/music/snapcast/manifest.yaml
 create mode 100644 platypush/backend/music/spotify/manifest.yaml
 rename platypush/backend/{nextcloud.py => nextcloud/__init__.py} (100%)
 create mode 100644 platypush/backend/nextcloud/manifest.yaml
 rename platypush/backend/{nfc.py => nfc/__init__.py} (100%)
 create mode 100644 platypush/backend/nfc/manifest.yaml
 create mode 100644 platypush/backend/nodered/manifest.yaml
 rename platypush/backend/{ping.py => ping/__init__.py} (100%)
 create mode 100644 platypush/backend/ping/manifest.yaml
 create mode 100644 platypush/backend/pushbullet/manifest.yaml
 rename platypush/backend/{redis.py => redis/__init__.py} (97%)
 create mode 100644 platypush/backend/redis/manifest.yaml
 create mode 100644 platypush/backend/scard/manifest.yaml
 delete mode 100644 platypush/backend/sensor/accelerometer.py
 create mode 100644 platypush/backend/sensor/accelerometer/__init__.py
 create mode 100644 platypush/backend/sensor/accelerometer/manifest.yaml
 delete mode 100644 platypush/backend/sensor/arduino.py
 create mode 100644 platypush/backend/sensor/arduino/__init__.py
 create mode 100644 platypush/backend/sensor/arduino/manifest.yaml
 rename platypush/backend/sensor/{battery.py => battery/__init__.py} (65%)
 create mode 100644 platypush/backend/sensor/battery/manifest.yaml
 rename platypush/backend/sensor/{bme280.py => bme280/__init__.py} (65%)
 create mode 100644 platypush/backend/sensor/bme280/manifest.yaml
 rename platypush/backend/sensor/{dht.py => dht/__init__.py} (64%)
 create mode 100644 platypush/backend/sensor/dht/manifest.yaml
 create mode 100644 platypush/backend/sensor/distance/manifest.yaml
 rename platypush/backend/sensor/distance/{vl53l1x.py => vl53l1x/__init__.py} (66%)
 create mode 100644 platypush/backend/sensor/distance/vl53l1x/manifest.yaml
 rename platypush/backend/sensor/{envirophat.py => envirophat/__init__.py} (76%)
 create mode 100644 platypush/backend/sensor/envirophat/manifest.yaml
 create mode 100644 platypush/backend/sensor/ir/zeroborg/manifest.yaml
 rename platypush/backend/sensor/{leap.py => leap/__init__.py} (100%)
 create mode 100644 platypush/backend/sensor/leap/manifest.yaml
 rename platypush/backend/sensor/{ltr559.py => ltr559/__init__.py} (60%)
 create mode 100644 platypush/backend/sensor/ltr559/manifest.yaml
 rename platypush/backend/sensor/{mcp3008.py => mcp3008/__init__.py} (54%)
 create mode 100644 platypush/backend/sensor/mcp3008/manifest.yaml
 create mode 100644 platypush/backend/sensor/motion/pmw3901/__init__.py
 create mode 100644 platypush/backend/sensor/motion/pmw3901/manifest.yaml
 delete mode 100644 platypush/backend/sensor/motion/pwm3901.py
 delete mode 100644 platypush/backend/sensor/serial.py
 create mode 100644 platypush/backend/sensor/serial/__init__.py
 create mode 100644 platypush/backend/sensor/serial/manifest.yaml
 rename platypush/backend/stt/{deepspeech.py => deepspeech/__init__.py} (100%)
 create mode 100644 platypush/backend/stt/deepspeech/manifest.yaml
 rename platypush/backend/stt/picovoice/{hotword.py => hotword/__init__.py} (100%)
 create mode 100644 platypush/backend/stt/picovoice/hotword/manifest.yaml
 rename platypush/backend/stt/picovoice/{speech.py => speech/__init__.py} (100%)
 create mode 100644 platypush/backend/stt/picovoice/speech/manifest.yaml
 rename platypush/backend/{tcp.py => tcp/__init__.py} (100%)
 create mode 100644 platypush/backend/tcp/manifest.yaml
 rename platypush/backend/{todoist.py => todoist/__init__.py} (98%)
 create mode 100644 platypush/backend/todoist/manifest.yaml
 rename platypush/backend/{travisci.py => travisci/__init__.py} (100%)
 create mode 100644 platypush/backend/travisci/manifest.yaml
 rename platypush/backend/{trello.py => trello/__init__.py} (98%)
 create mode 100644 platypush/backend/trello/manifest.yaml
 rename platypush/backend/weather/{buienradar.py => buienradar/__init__.py} (100%)
 create mode 100644 platypush/backend/weather/buienradar/manifest.yaml
 rename platypush/backend/weather/{darksky.py => darksky/__init__.py} (100%)
 create mode 100644 platypush/backend/weather/darksky/manifest.yaml
 rename platypush/backend/weather/{openweathermap.py => openweathermap/__init__.py} (100%)
 create mode 100644 platypush/backend/weather/openweathermap/manifest.yaml
 rename platypush/backend/{websocket.py => websocket/__init__.py} (89%)
 create mode 100644 platypush/backend/websocket/manifest.yaml
 rename platypush/backend/{wiimote.py => wiimote/__init__.py} (81%)
 create mode 100644 platypush/backend/wiimote/manifest.yaml
 rename platypush/backend/zigbee/{mqtt.py => mqtt/__init__.py} (100%)
 create mode 100644 platypush/backend/zigbee/mqtt/manifest.yaml
 create mode 100644 platypush/backend/zwave/manifest.yaml
 rename platypush/backend/zwave/{mqtt.py => mqtt/__init__.py} (100%)
 create mode 100644 platypush/backend/zwave/mqtt/manifest.yaml
 rename platypush/plugins/adafruit/{io.py => io/__init__.py} (97%)
 create mode 100644 platypush/plugins/adafruit/io/manifest.yaml
 rename platypush/plugins/{alarm.py => alarm/__init__.py} (100%)
 create mode 100644 platypush/plugins/alarm/manifest.yaml
 rename platypush/plugins/{arduino.py => arduino/__init__.py} (100%)
 create mode 100644 platypush/plugins/arduino/manifest.yaml
 create mode 100644 platypush/plugins/assistant/echo/manifest.yaml
 create mode 100644 platypush/plugins/assistant/google/manifest.yaml
 rename platypush/plugins/assistant/google/{pushtotalk.py => pushtotalk/__init__.py} (100%)
 create mode 100644 platypush/plugins/assistant/google/pushtotalk/manifest.yaml
 rename platypush/plugins/{autoremote.py => autoremote/__init__.py} (97%)
 create mode 100644 platypush/plugins/autoremote/manifest.yaml
 rename platypush/plugins/bluetooth/{ble.py => ble/__init__.py} (100%)
 create mode 100644 platypush/plugins/bluetooth/ble/manifest.yaml
 create mode 100644 platypush/plugins/bluetooth/manifest.yaml
 rename platypush/plugins/calendar/{ical.py => ical/__init__.py} (85%)
 create mode 100644 platypush/plugins/calendar/ical/manifest.yaml
 create mode 100644 platypush/plugins/calendar/manifest.yaml
 rename platypush/plugins/camera/android/{ipcam.py => ipcam/__init__.py} (100%)
 create mode 100644 platypush/plugins/camera/android/ipcam/manifest.yaml
 rename platypush/plugins/camera/{cv.py => cv/__init__.py} (100%)
 create mode 100644 platypush/plugins/camera/cv/manifest.yaml
 create mode 100644 platypush/plugins/camera/ffmpeg/manifest.yaml
 create mode 100644 platypush/plugins/camera/gstreamer/manifest.yaml
 create mode 100644 platypush/plugins/camera/ir/mlx90640/manifest.yaml
 create mode 100644 platypush/plugins/camera/pi/manifest.yaml
 rename platypush/plugins/chat/{telegram.py => telegram/__init__.py} (100%)
 create mode 100644 platypush/plugins/chat/telegram/manifest.yaml
 rename platypush/plugins/{clipboard.py => clipboard/__init__.py} (100%)
 create mode 100644 platypush/plugins/clipboard/manifest.yaml
 rename platypush/plugins/{config.py => config/__init__.py} (88%)
 create mode 100644 platypush/plugins/config/manifest.yaml
 rename platypush/plugins/{covid19.py => covid19/__init__.py} (100%)
 create mode 100644 platypush/plugins/covid19/manifest.yaml
 rename platypush/plugins/{csv.py => csv/__init__.py} (98%)
 create mode 100644 platypush/plugins/csv/manifest.yaml
 create mode 100644 platypush/plugins/db/manifest.yaml
 rename platypush/plugins/{dbus.py => dbus/__init__.py} (100%)
 create mode 100644 platypush/plugins/dbus/manifest.yaml
 rename platypush/plugins/{dropbox.py => dropbox/__init__.py} (100%)
 create mode 100644 platypush/plugins/dropbox/manifest.yaml
 create mode 100644 platypush/plugins/esp/manifest.yaml
 rename platypush/plugins/{ffmpeg.py => ffmpeg/__init__.py} (100%)
 create mode 100644 platypush/plugins/ffmpeg/manifest.yaml
 rename platypush/plugins/{file.py => file/__init__.py} (100%)
 create mode 100644 platypush/plugins/file/manifest.yaml
 rename platypush/plugins/{foursquare.py => foursquare/__init__.py} (100%)
 create mode 100644 platypush/plugins/foursquare/manifest.yaml
 rename platypush/plugins/google/{calendar.py => calendar/__init__.py} (85%)
 create mode 100644 platypush/plugins/google/calendar/manifest.yaml
 rename platypush/plugins/google/{drive.py => drive/__init__.py} (98%)
 create mode 100644 platypush/plugins/google/drive/manifest.yaml
 rename platypush/plugins/google/{fit.py => fit/__init__.py} (90%)
 create mode 100644 platypush/plugins/google/fit/manifest.yaml
 rename platypush/plugins/google/{mail.py => mail/__init__.py} (95%)
 create mode 100644 platypush/plugins/google/mail/manifest.yaml
 rename platypush/plugins/google/{maps.py => maps/__init__.py} (95%)
 create mode 100644 platypush/plugins/google/maps/manifest.yaml
 rename platypush/plugins/google/{pubsub.py => pubsub/__init__.py} (96%)
 create mode 100644 platypush/plugins/google/pubsub/manifest.yaml
 rename platypush/plugins/google/{translate.py => translate/__init__.py} (97%)
 create mode 100644 platypush/plugins/google/translate/manifest.yaml
 rename platypush/plugins/google/{youtube.py => youtube/__init__.py} (93%)
 create mode 100644 platypush/plugins/google/youtube/manifest.yaml
 create mode 100644 platypush/plugins/gpio/manifest.yaml
 create mode 100644 platypush/plugins/gpio/sensor/accelerometer/manifest.yaml
 rename platypush/plugins/gpio/sensor/{bme280.py => bme280/__init__.py} (100%)
 create mode 100644 platypush/plugins/gpio/sensor/bme280/manifest.yaml
 rename platypush/plugins/gpio/sensor/{dht.py => dht/__init__.py} (98%)
 create mode 100644 platypush/plugins/gpio/sensor/dht/manifest.yaml
 create mode 100644 platypush/plugins/gpio/sensor/distance/manifest.yaml
 rename platypush/plugins/gpio/sensor/distance/{vl53l1x.py => vl53l1x/__init__.py} (100%)
 create mode 100644 platypush/plugins/gpio/sensor/distance/vl53l1x/manifest.yaml
 rename platypush/plugins/gpio/sensor/{envirophat.py => envirophat/__init__.py} (100%)
 create mode 100644 platypush/plugins/gpio/sensor/envirophat/manifest.yaml
 rename platypush/plugins/gpio/sensor/{ltr559.py => ltr559/__init__.py} (100%)
 create mode 100644 platypush/plugins/gpio/sensor/ltr559/manifest.yaml
 create mode 100644 platypush/plugins/gpio/sensor/mcp3008/manifest.yaml
 rename platypush/plugins/gpio/sensor/motion/{pwm3901.py => pmw3901/__init__.py} (95%)
 create mode 100644 platypush/plugins/gpio/sensor/motion/pmw3901/manifest.yaml
 create mode 100644 platypush/plugins/gpio/zeroborg/manifest.yaml
 rename platypush/plugins/{graphite.py => graphite/__init__.py} (97%)
 create mode 100644 platypush/plugins/graphite/manifest.yaml
 delete mode 100644 platypush/plugins/homeseer.py
 create mode 100644 platypush/plugins/http/request/manifest.yaml
 rename platypush/plugins/http/request/{rss.py => rss/__init__.py} (100%)
 create mode 100644 platypush/plugins/http/request/rss/manifest.yaml
 create mode 100644 platypush/plugins/http/webpage/manifest.yaml
 rename platypush/plugins/{ifttt.py => ifttt/__init__.py} (96%)
 create mode 100644 platypush/plugins/ifttt/manifest.yaml
 rename platypush/plugins/{inputs.py => inputs/__init__.py} (100%)
 create mode 100644 platypush/plugins/inputs/manifest.yaml
 rename platypush/plugins/{inspect.py => inspect/__init__.py} (100%)
 create mode 100644 platypush/plugins/inspect/manifest.yaml
 rename platypush/plugins/{kafka.py => kafka/__init__.py} (100%)
 create mode 100644 platypush/plugins/kafka/manifest.yaml
 create mode 100644 platypush/plugins/lastfm/manifest.yaml
 rename platypush/plugins/lcd/{gpio.py => gpio/__init__.py} (100%)
 create mode 100644 platypush/plugins/lcd/gpio/manifest.yaml
 rename platypush/plugins/lcd/{i2c.py => i2c/__init__.py} (98%)
 create mode 100644 platypush/plugins/lcd/i2c/manifest.yaml
 create mode 100644 platypush/plugins/light/hue/manifest.yaml
 rename platypush/plugins/{linode.py => linode/__init__.py} (100%)
 create mode 100644 platypush/plugins/linode/manifest.yaml
 rename platypush/plugins/{logger.py => logger/__init__.py} (100%)
 create mode 100644 platypush/plugins/logger/manifest.yaml
 rename platypush/plugins/luma/{oled.py => oled/__init__.py} (99%)
 create mode 100644 platypush/plugins/luma/oled/manifest.yaml
 rename platypush/plugins/mail/{imap.py => imap/__init__.py} (100%)
 create mode 100644 platypush/plugins/mail/imap/manifest.yaml
 rename platypush/plugins/mail/{smtp.py => smtp/__init__.py} (100%)
 create mode 100644 platypush/plugins/mail/smtp/manifest.yaml
 rename platypush/plugins/media/{chromecast.py => chromecast/__init__.py} (99%)
 create mode 100644 platypush/plugins/media/chromecast/manifest.yaml
 create mode 100644 platypush/plugins/media/gstreamer/manifest.yaml
 rename platypush/plugins/media/{kodi.py => kodi/__init__.py} (96%)
 create mode 100644 platypush/plugins/media/kodi/manifest.yaml
 rename platypush/plugins/media/{mplayer.py => mplayer/__init__.py} (97%)
 create mode 100644 platypush/plugins/media/mplayer/manifest.yaml
 rename platypush/plugins/media/{mpv.py => mpv/__init__.py} (100%)
 create mode 100644 platypush/plugins/media/mpv/manifest.yaml
 rename platypush/plugins/media/{omxplayer.py => omxplayer/__init__.py} (96%)
 create mode 100644 platypush/plugins/media/omxplayer/manifest.yaml
 rename platypush/plugins/media/{plex.py => plex/__init__.py} (99%)
 create mode 100644 platypush/plugins/media/plex/manifest.yaml
 rename platypush/plugins/media/{subtitles.py => subtitles/__init__.py} (99%)
 create mode 100644 platypush/plugins/media/subtitles/manifest.yaml
 rename platypush/plugins/media/{vlc.py => vlc/__init__.py} (100%)
 create mode 100644 platypush/plugins/media/vlc/manifest.yaml
 rename platypush/plugins/media/{webtorrent.py => webtorrent/__init__.py} (94%)
 create mode 100644 platypush/plugins/media/webtorrent/manifest.yaml
 rename platypush/plugins/{midi.py => midi/__init__.py} (82%)
 create mode 100644 platypush/plugins/midi/manifest.yaml
 rename platypush/plugins/ml/{cv.py => cv/__init__.py} (100%)
 create mode 100644 platypush/plugins/ml/cv/manifest.yaml
 create mode 100644 platypush/plugins/mobile/join/manifest.yaml
 rename platypush/plugins/{mqtt.py => mqtt/__init__.py} (99%)
 create mode 100644 platypush/plugins/mqtt/manifest.yaml
 create mode 100644 platypush/plugins/music/mpd/manifest.yaml
 rename platypush/plugins/music/{snapcast.py => snapcast/__init__.py} (99%)
 create mode 100644 platypush/plugins/music/snapcast/manifest.yaml
 rename platypush/plugins/music/{spotify.py => spotify/__init__.py} (100%)
 create mode 100644 platypush/plugins/music/spotify/manifest.yaml
 rename platypush/plugins/{nextcloud.py => nextcloud/__init__.py} (99%)
 create mode 100644 platypush/plugins/nextcloud/manifest.yaml
 rename platypush/plugins/{nmap.py => nmap/__init__.py} (100%)
 create mode 100644 platypush/plugins/nmap/manifest.yaml
 rename platypush/plugins/{otp.py => otp/__init__.py} (100%)
 create mode 100644 platypush/plugins/otp/manifest.yaml
 rename platypush/plugins/{pihole.py => pihole/__init__.py} (100%)
 create mode 100644 platypush/plugins/pihole/manifest.yaml
 rename platypush/plugins/{ping.py => ping/__init__.py} (100%)
 create mode 100644 platypush/plugins/ping/manifest.yaml
 rename platypush/plugins/printer/{cups.py => cups/__init__.py} (100%)
 create mode 100644 platypush/plugins/printer/cups/manifest.yaml
 rename platypush/plugins/{pushbullet.py => pushbullet/__init__.py} (98%)
 create mode 100644 platypush/plugins/pushbullet/manifest.yaml
 rename platypush/plugins/pwm/{pca9685.py => pca9685/__init__.py} (98%)
 create mode 100644 platypush/plugins/pwm/pca9685/manifest.yaml
 rename platypush/plugins/{qrcode.py => qrcode/__init__.py} (93%)
 create mode 100644 platypush/plugins/qrcode/manifest.yaml
 rename platypush/plugins/{redis.py => redis/__init__.py} (97%)
 create mode 100644 platypush/plugins/redis/manifest.yaml
 rename platypush/plugins/{rtorrent.py => rtorrent/__init__.py} (100%)
 create mode 100644 platypush/plugins/rtorrent/manifest.yaml
 create mode 100644 platypush/plugins/serial/manifest.yaml
 create mode 100644 platypush/plugins/shell/manifest.yaml
 rename platypush/plugins/{slack.py => slack/__init__.py} (95%)
 create mode 100644 platypush/plugins/slack/manifest.yaml
 rename platypush/plugins/{smartthings.py => smartthings/__init__.py} (100%)
 create mode 100644 platypush/plugins/smartthings/manifest.yaml
 create mode 100644 platypush/plugins/sound/manifest.yaml
 create mode 100644 platypush/plugins/ssh/manifest.yaml
 rename platypush/plugins/stt/{deepspeech.py => deepspeech/__init__.py} (100%)
 create mode 100644 platypush/plugins/stt/deepspeech/manifest.yaml
 rename platypush/plugins/stt/picovoice/{hotword.py => hotword/__init__.py} (100%)
 create mode 100644 platypush/plugins/stt/picovoice/hotword/manifest.yaml
 rename platypush/plugins/stt/picovoice/{speech.py => speech/__init__.py} (100%)
 create mode 100644 platypush/plugins/stt/picovoice/speech/manifest.yaml
 rename platypush/plugins/{sun.py => sun/__init__.py} (100%)
 create mode 100644 platypush/plugins/sun/manifest.yaml
 rename platypush/plugins/switch/{tplink.py => tplink/__init__.py} (100%)
 create mode 100644 platypush/plugins/switch/tplink/manifest.yaml
 create mode 100644 platypush/plugins/switch/wemo/manifest.yaml
 rename platypush/plugins/switchbot/{bluetooth.py => bluetooth/__init__.py} (100%)
 create mode 100644 platypush/plugins/switchbot/bluetooth/manifest.yaml
 create mode 100644 platypush/plugins/switchbot/manifest.yaml
 create mode 100644 platypush/plugins/system/manifest.yaml
 rename platypush/plugins/{tcp.py => tcp/__init__.py} (100%)
 create mode 100644 platypush/plugins/tcp/manifest.yaml
 create mode 100644 platypush/plugins/tensorflow/manifest.yaml
 rename platypush/plugins/{todoist.py => todoist/__init__.py} (100%)
 create mode 100644 platypush/plugins/todoist/manifest.yaml
 rename platypush/plugins/{torrent.py => torrent/__init__.py} (99%)
 create mode 100644 platypush/plugins/torrent/manifest.yaml
 rename platypush/plugins/{travisci.py => travisci/__init__.py} (100%)
 create mode 100644 platypush/plugins/travisci/manifest.yaml
 rename platypush/plugins/{trello.py => trello/__init__.py} (100%)
 create mode 100644 platypush/plugins/trello/manifest.yaml
 rename platypush/plugins/tts/{google.py => google/__init__.py} (96%)
 create mode 100644 platypush/plugins/tts/google/manifest.yaml
 create mode 100644 platypush/plugins/tts/manifest.yaml
 rename platypush/plugins/tv/samsung/{ws.py => ws/__init__.py} (100%)
 create mode 100644 platypush/plugins/tv/samsung/ws/manifest.yaml
 rename platypush/plugins/{twilio.py => twilio/__init__.py} (100%)
 create mode 100644 platypush/plugins/twilio/manifest.yaml
 rename platypush/plugins/{udp.py => udp/__init__.py} (100%)
 create mode 100644 platypush/plugins/udp/manifest.yaml
 rename platypush/plugins/{user.py => user/__init__.py} (100%)
 create mode 100644 platypush/plugins/user/manifest.yaml
 rename platypush/plugins/{utils.py => utils/__init__.py} (100%)
 create mode 100644 platypush/plugins/utils/manifest.yaml
 rename platypush/plugins/{variable.py => variable/__init__.py} (97%)
 create mode 100644 platypush/plugins/variable/manifest.yaml
 rename platypush/plugins/weather/{buienradar.py => buienradar/__init__.py} (100%)
 create mode 100644 platypush/plugins/weather/buienradar/manifest.yaml
 rename platypush/plugins/weather/{darksky.py => darksky/__init__.py} (100%)
 create mode 100644 platypush/plugins/weather/darksky/manifest.yaml
 rename platypush/plugins/weather/{openweathermap.py => openweathermap/__init__.py} (98%)
 create mode 100644 platypush/plugins/weather/openweathermap/manifest.yaml
 rename platypush/plugins/{websocket.py => websocket/__init__.py} (91%)
 create mode 100644 platypush/plugins/websocket/manifest.yaml
 rename platypush/plugins/{wiimote.py => wiimote/__init__.py} (100%)
 create mode 100644 platypush/plugins/wiimote/manifest.yaml
 rename platypush/plugins/{zeroconf.py => zeroconf/__init__.py} (100%)
 create mode 100644 platypush/plugins/zeroconf/manifest.yaml
 rename platypush/plugins/zigbee/{mqtt.py => mqtt/__init__.py} (100%)
 create mode 100644 platypush/plugins/zigbee/mqtt/manifest.yaml
 create mode 100644 platypush/plugins/zwave/manifest.yaml
 rename platypush/plugins/zwave/{mqtt.py => mqtt/__init__.py} (100%)
 create mode 100644 platypush/plugins/zwave/mqtt/manifest.yaml
 create mode 100644 platypush/utils/manifest.py

diff --git a/MANIFEST.in b/MANIFEST.in
index ace9a1f5..e61e3251 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,2 +1,3 @@
 recursive-include platypush/backend/http/webapp/dist *
 include platypush/plugins/http/webpage/mercury-parser.js
+global-include manifest.yaml
diff --git a/bin/platyvenv b/bin/platyvenv
index 7b69abc8..4e1d33ab 100755
--- a/bin/platyvenv
+++ b/bin/platyvenv
@@ -6,12 +6,12 @@
 # and automatically managed the required dependencies, as well as start,     #
 # stop and remove them                                                       #
 #                                                                            #
-# @author: Fabio Manganiello <blacklight86@gmail.com>                        #
+# @author: Fabio Manganiello <fabio@platypush.tech>                          #
 # @licence: MIT                                                              #
 ##############################################################################
 
 
-workdir=$HOME/.local/share/platypush/venv
+workdir="$HOME/.local/share/platypush/venv"
 
 function build {
     cfgfile=
@@ -35,88 +35,74 @@ function build {
     fi
 
     echo "Parsing configuration file"
-    deps=()
+    pip_cmd=
+    pkg_cmd=
     includes=()
+    cmd_exec=()
 
     while read -r line; do
-        echo ${line} | egrep '``pip install .+?``' > /dev/null 2>&1
-        if (( $? != 0 )); then
-            continue
-        fi
-
-        dep=$(echo ${line} | sed -r -e 's/.*``pip install (.+?)``.*/\1/')
-        deps+=("$dep")
-    done <<< $(python <<EOF
+      if echo "$line" | grep -E "^pip:\s*"; then
+        pip_cmd="$(echo "$line" | sed -r -e 's/^pip:\s*(.*)'/\\1/)"
+      elif echo "$line" | grep -E "^packages:\s*"; then
+        pkg_cmd="$(echo "$line" | sed -r -e 's/^packages:\s*(.*)'/\\1/)"
+      elif echo "$line" | grep -E "^exec:\s*"; then
+        cmd_exec+=("$(echo "$line" | sed -r -e 's/^exec:\s*(.*)'/\\1/)")
+      elif echo "$line" | grep -E "^include:\s*"; then
+        includes+=("$(echo "$line" | sed -r -e 's/^include:\s*(.*)'/\\1/)")
+      elif echo "$line" | grep -E "^device_id:\s*"; then
+        device_id="$(echo "$line" | sed -r -e 's/^device_id:\s*(.*)'/\\1/)"
+      fi
+    done <<< "$(python <<EOF
 from platypush.config import Config
-from platypush.context import get_plugin, get_backend, register_backends
+from platypush.utils.manifest import get_install_commands_from_conf
 
-Config.init('`realpath ${cfgfile}`')
-register_backends()
-backend_config = Config.get_backends()
+deps = get_install_commands_from_conf('$(realpath "${cfgfile}")')
+print(f'device_id: {Config.get("device_id")}')
 
-for name in Config.get_backends().keys():
-    backend = get_backend(name)
-    print(backend.__doc__)
+if deps.get('pip'):
+    print(f'pip: {deps["pip"]}')
 
-for name in Config.get_plugins().keys():
-    try:
-        plugin = get_plugin(name)
-        print(plugin.__doc__)
-    except:
-        pass
-EOF
-)
+if deps.get('packages'):
+    print(f'packages: {deps["packages"]}')
 
-    while read -r include; do
-        includes+=(${include})
-    done <<< $(python <<EOF
-from platypush.config import Config
-from platypush.context import get_plugin, get_backend, register_backends
-
-Config.init('`realpath ${cfgfile}`')
+for cmd in deps.get('exec', []):
+    print(f'exec: {cmd}')
 
 for include in Config._included_files:
-    print(include)
+    print(f'include: {include}')
 EOF
-)
+)"
 
-    device_id=$(python <<EOF
-from platypush.config import Config
-
-Config.init('`realpath ${cfgfile}`')
-print(Config.get('device_id'))
-EOF
-)
-
-    envdir=${workdir}/${device_id}
-    etcdir=${envdir}/etc/platypush
+    envdir="${workdir}/${device_id}"
+    etcdir="${envdir}/etc/platypush"
 
     echo "Preparing virtual environment for device $device_id"
     mkdir -p "$envdir"
     mkdir -p "$etcdir"
-    srcdir=`dirname "$cfgfile"`
+    srcdir=$(dirname "$cfgfile")
 
-    for ((i=0; $i < ${#includes[@]}; i++)); do
-        incdir=`dirname "${includes[$i]}"`
-        incdir=`realpath --relative-to="$srcdir" "$incdir"`
+    for ((i=0; i < ${#includes[@]}; i++)); do
+        incdir=$(dirname "${includes[$i]}")
+        incdir=$(realpath --relative-to="$srcdir" "$incdir")
         destdir="$etcdir/$incdir"
         mkdir -p "$destdir"
         cp "${includes[$i]}" "$destdir"
     done
 
     cp "$cfgfile" "$etcdir/config.yaml"
-    cfgfile=${etcdir}/config.yaml
+    cfgfile="${etcdir}/config.yaml"
 
-    python3 -m venv ${envdir}
-    cd ${envdir}
-    source ${envdir}/bin/activate
+    python3 -m venv "${envdir}"
+    cd "${envdir}" || exit 1
+    source "${envdir}/bin/activate"
 
     echo "Installing required dependencies"
+    # shellcheck disable=SC2086
+    [ -n "${pkg_cmd}" ] && sudo ${pkg_cmd}
+    [ -n "${pip_cmd}" ] && ${pip_cmd}
 
-    for ((i=0; $i < ${#deps[@]}; i++)); do
-        echo ${deps[$i]}
-    done | sort -u | while read dep; do
-        pip install ${dep}
+    for ((i=0; i < ${#cmd_exec[@]}; i++)); do
+        ${cmd_exec[$i]}
     done
 
     pip install --upgrade git+https://git.platypush.tech/platypush/platypush.git
@@ -130,44 +116,43 @@ function start {
     fi
 
     env=$1
-    envdir=${workdir}/${env}
-    logsdir=${envdir}/var/log/platypush
-    rundir=${envdir}/var/run
-    pidfile=${rundir}/platypush.pid
-    cfgfile=${envdir}/etc/platypush/config.yaml
+    envdir="${workdir}/${env}"
+    logsdir="${envdir}/var/log/platypush"
+    rundir="${envdir}/var/run"
+    pidfile="${rundir}/platypush.pid"
+    cfgfile="${envdir}/etc/platypush/config.yaml"
 
     if [[ ! -d "$envdir" ]]; then
         echo "No such directory: $envdir" >&2
         exit 1
     fi
 
-    mkdir -p ${logsdir}
-    mkdir -p ${rundir}
+    mkdir -p "${logsdir}"
+    mkdir -p "${rundir}"
 
     if [[ -f "$pidfile" ]]; then
-        pid=`cat "$pidfile"`
-        if ps -p ${pid} | grep platypush; then
-            echo "Another instance (PID $pid) is running, please stop that instance first"
+        if pgrep -F "${pidfile}"; then
+            echo "Another instance (PID $(cat "${pidfile}")) is running, please stop that instance first"
             exit 1
         fi
 
-        echo "A PID file was found but the process doesn't seem to be running, starting anyway"
+        echo "A PID file was found but the process does not seem to be running, starting anyway"
         rm -f "$pidfile"
     fi
 
-    python3 -m venv ${envdir}
-    cd ${envdir}
+    python3 -m venv "${envdir}"
+    cd "${envdir}" || exit 1
     source bin/activate
-    bin/platypush -c "$cfgfile" -P "$pidfile" > ${logsdir}/stdout.log 2> ${logsdir}/stderr.log &
-    start_time=`date +'%s'`
+    bin/platypush -c "$cfgfile" -P "$pidfile" > "${logsdir}/stdout.log" 2> "${logsdir}/stderr.log" &
+    start_time=$(date +'%s')
     timeout=30
 
     while :; do
         [[ -f "$pidfile" ]] && break
-        now=`date +'%s'`
-        let elapsed=$now-$start_time
-        if (( ${elapsed} >= ${timeout} )); then
-            echo "Platypush instance '$env' didn't start within $timeout seconds" >&2
+        now=$(date +'%s')
+        elapsed=$(( now-start_time ))
+        if (( elapsed >= timeout )); then
+            echo "Platypush instance '$env' did not start within $timeout seconds" >&2
             exit 1
         fi
 
@@ -175,7 +160,7 @@ function start {
         sleep 1
     done
 
-    pid=`cat "$pidfile"`
+    pid=$(cat "$pidfile")
     echo
     echo "Platypush environment $env started with PID $pid, logs dir: $logsdir"
 }
@@ -187,9 +172,9 @@ function stop {
     fi
 
     env=$1
-    envdir=${workdir}/${env}
-    rundir=${envdir}/var/run
-    pidfile=${rundir}/platypush.pid
+    envdir="${workdir}/${env}"
+    rundir="${envdir}/var/run"
+    pidfile="${rundir}/platypush.pid"
 
     if [[ ! -d "$envdir" ]]; then
         echo "No such directory: $envdir" >&2
@@ -197,12 +182,13 @@ function stop {
     fi
 
     if [[ ! -f "$pidfile" ]]; then
-        echo "No pidfile found for instance "${env}""
+        echo "No pidfile found for instance \"${env}\""
         exit 1
     fi
 
-    pid=`cat "$pidfile"`
-    pids="$pid `ps --no-headers -o pid= --ppid $pid`"
+    pid=$(cat "$pidfile")
+    pids="$pid $(ps --no-headers -o pid= --ppid "$pid")"
+    # shellcheck disable=SC2086
     kill -9 ${pids}
     rm -f "$pidfile"
     echo "Instance '$env' with PID $pid stopped"
@@ -214,9 +200,9 @@ function rme {
         exit 1
     fi
 
-    envdir=${workdir}/$1
-    rundir=${envdir}/var/run
-    pidfile=${rundir}/platypush.pid
+    envdir="${workdir}/$1"
+    rundir="${envdir}/var/run"
+    pidfile="${rundir}/platypush.pid"
 
     if [[ ! -d "$envdir" ]]; then
         echo "No such directory: $envdir" >&2
@@ -224,14 +210,18 @@ function rme {
     fi
 
     if [[ -f "$pidfile" ]]; then
-        if ps -p `cat "$pidfile"` | grep platypush; then
-            echo "Another instance (PID $pidfile) is running, please stop that instance first"
+        if pgrep -F "${pidfile}"; then
+            echo "Another instance (PID $(cat "$pidfile")) is running, please stop that instance first"
             exit 1
         fi
 
-        echo "A PID file was found but the process doesn't seem to be running, removing anyway"
+        echo "A PID file was found but the process does not seem to be running, removing anyway"
     fi
 
+    echo "WARNING: This operation will permanently remove the Platypush environment $1"
+    echo -n "Are you sure you want to continue? (y/N) "
+    IFS= read -r answer
+    echo "$answer" | grep -E '^[yY]' >/dev/null || exit 0
     rm -rf "$envdir"
     echo "$envdir removed"
 }
@@ -247,13 +237,13 @@ fi
 
 action=$1
 shift
-mkdir -p ${workdir}
+mkdir -p "${workdir}"
 
+# shellcheck disable=SC2048,SC2086
 case ${action} in
-    'build') build;;
+    'build') build $*;;
     'start') start $*;;
     'stop') stop $*;;
     'rm') rme $*;;
     *) usage;;
 esac
-
diff --git a/docs/source/backends.rst b/docs/source/backends.rst
index 8ced60b2..5e893091 100644
--- a/docs/source/backends.rst
+++ b/docs/source/backends.rst
@@ -8,10 +8,8 @@ Backends
 
     platypush/backend/adafruit.io.rst
     platypush/backend/alarm.rst
-    platypush/backend/assistant.rst
     platypush/backend/assistant.google.rst
     platypush/backend/assistant.snowboy.rst
-    platypush/backend/bluetooth.rst
     platypush/backend/bluetooth.fileserver.rst
     platypush/backend/bluetooth.pushserver.rst
     platypush/backend/bluetooth.scanner.rst
@@ -52,7 +50,6 @@ Backends
     platypush/backend/pushbullet.rst
     platypush/backend/redis.rst
     platypush/backend/scard.rst
-    platypush/backend/sensor.rst
     platypush/backend/sensor.accelerometer.rst
     platypush/backend/sensor.arduino.rst
     platypush/backend/sensor.battery.rst
@@ -67,7 +64,6 @@ Backends
     platypush/backend/sensor.mcp3008.rst
     platypush/backend/sensor.motion.pwm3901.rst
     platypush/backend/sensor.serial.rst
-    platypush/backend/stt.rst
     platypush/backend/stt.deepspeech.rst
     platypush/backend/stt.picovoice.hotword.rst
     platypush/backend/stt.picovoice.speech.rst
@@ -75,7 +71,6 @@ Backends
     platypush/backend/todoist.rst
     platypush/backend/travisci.rst
     platypush/backend/trello.rst
-    platypush/backend/weather.rst
     platypush/backend/weather.buienradar.rst
     platypush/backend/weather.darksky.rst
     platypush/backend/weather.openweathermap.rst
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 36f73e34..2a7262c6 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -238,7 +238,7 @@ autodoc_mock_imports = ['googlesamples.assistant.grpc.audio_helpers',
                         'envirophat',
                         'gps',
                         'picamera',
-                        'pwm3901',
+                        'pmw3901',
                         'PIL',
                         'croniter',
                         'pyaudio',
diff --git a/docs/source/plugins.rst b/docs/source/plugins.rst
index 63d62fbb..b05de140 100644
--- a/docs/source/plugins.rst
+++ b/docs/source/plugins.rst
@@ -9,7 +9,6 @@ Plugins
     platypush/plugins/adafruit.io.rst
     platypush/plugins/alarm.rst
     platypush/plugins/arduino.rst
-    platypush/plugins/assistant.rst
     platypush/plugins/assistant.echo.rst
     platypush/plugins/assistant.google.rst
     platypush/plugins/assistant.google.pushtotalk.rst
@@ -18,14 +17,12 @@ Plugins
     platypush/plugins/bluetooth.ble.rst
     platypush/plugins/calendar.rst
     platypush/plugins/calendar.ical.rst
-    platypush/plugins/camera.rst
     platypush/plugins/camera.android.ipcam.rst
     platypush/plugins/camera.cv.rst
     platypush/plugins/camera.ffmpeg.rst
     platypush/plugins/camera.gstreamer.rst
     platypush/plugins/camera.ir.mlx90640.rst
     platypush/plugins/camera.pi.rst
-    platypush/plugins/chat.rst
     platypush/plugins/chat.telegram.rst
     platypush/plugins/clipboard.rst
     platypush/plugins/config.rst
@@ -38,7 +35,6 @@ Plugins
     platypush/plugins/ffmpeg.rst
     platypush/plugins/file.rst
     platypush/plugins/foursquare.rst
-    platypush/plugins/google.rst
     platypush/plugins/google.calendar.rst
     platypush/plugins/google.drive.rst
     platypush/plugins/google.fit.rst
@@ -48,7 +44,6 @@ Plugins
     platypush/plugins/google.translate.rst
     platypush/plugins/google.youtube.rst
     platypush/plugins/gpio.rst
-    platypush/plugins/gpio.sensor.rst
     platypush/plugins/gpio.sensor.accelerometer.rst
     platypush/plugins/gpio.sensor.bme280.rst
     platypush/plugins/gpio.sensor.dht.rst
@@ -69,18 +64,14 @@ Plugins
     platypush/plugins/inspect.rst
     platypush/plugins/kafka.rst
     platypush/plugins/lastfm.rst
-    platypush/plugins/lcd.rst
     platypush/plugins/lcd.gpio.rst
     platypush/plugins/lcd.i2c.rst
-    platypush/plugins/light.rst
     platypush/plugins/light.hue.rst
     platypush/plugins/linode.rst
     platypush/plugins/logger.rst
     platypush/plugins/luma.oled.rst
-    platypush/plugins/mail.rst
     platypush/plugins/mail.imap.rst
     platypush/plugins/mail.smtp.rst
-    platypush/plugins/media.rst
     platypush/plugins/media.chromecast.rst
     platypush/plugins/media.gstreamer.rst
     platypush/plugins/media.kodi.rst
@@ -95,7 +86,6 @@ Plugins
     platypush/plugins/ml.cv.rst
     platypush/plugins/mobile.join.rst
     platypush/plugins/mqtt.rst
-    platypush/plugins/music.rst
     platypush/plugins/music.mpd.rst
     platypush/plugins/music.snapcast.rst
     platypush/plugins/music.spotify.rst
@@ -110,19 +100,16 @@ Plugins
     platypush/plugins/qrcode.rst
     platypush/plugins/redis.rst
     platypush/plugins/rtorrent.rst
-    platypush/plugins/sensor.rst
     platypush/plugins/serial.rst
     platypush/plugins/shell.rst
     platypush/plugins/slack.rst
     platypush/plugins/smartthings.rst
     platypush/plugins/sound.rst
     platypush/plugins/ssh.rst
-    platypush/plugins/stt.rst
     platypush/plugins/stt.deepspeech.rst
     platypush/plugins/stt.picovoice.hotword.rst
     platypush/plugins/stt.picovoice.speech.rst
     platypush/plugins/sun.rst
-    platypush/plugins/switch.rst
     platypush/plugins/switch.tplink.rst
     platypush/plugins/switch.wemo.rst
     platypush/plugins/switchbot.rst
@@ -142,7 +129,6 @@ Plugins
     platypush/plugins/user.rst
     platypush/plugins/utils.rst
     platypush/plugins/variable.rst
-    platypush/plugins/weather.rst
     platypush/plugins/weather.buienradar.rst
     platypush/plugins/weather.darksky.rst
     platypush/plugins/weather.openweathermap.rst
@@ -151,5 +137,4 @@ Plugins
     platypush/plugins/zeroconf.rst
     platypush/plugins/zigbee.mqtt.rst
     platypush/plugins/zwave.rst
-    platypush/plugins/zwave._base.rst
     platypush/plugins/zwave.mqtt.rst
diff --git a/generate_missing_docs.py b/generate_missing_docs.py
index d302a7b8..bce44186 100644
--- a/generate_missing_docs.py
+++ b/generate_missing_docs.py
@@ -1,14 +1,27 @@
 import os
 
+from platypush.backend import Backend
 from platypush.context import get_plugin
+from platypush.plugins import Plugin
+from platypush.utils.manifest import get_manifests
 
 
 def get_all_plugins():
-    return get_plugin('inspect').get_all_plugins().output
+    manifests = {mf.component_name for mf in get_manifests(Plugin)}
+    return {
+        plugin_name: plugin_info
+        for plugin_name, plugin_info in get_plugin('inspect').get_all_plugins().output.items()
+        if plugin_name in manifests
+    }
 
 
 def get_all_backends():
-    return get_plugin('inspect').get_all_backends().output
+    manifests = {mf.component_name for mf in get_manifests(Backend)}
+    return {
+        backend_name: backend_info
+        for backend_name, backend_info in get_plugin('inspect').get_all_backends().output.items()
+        if backend_name in manifests
+    }
 
 
 def get_all_events():
diff --git a/platypush/backend/__init__.py b/platypush/backend/__init__.py
index f69dcf09..d0751fa9 100644
--- a/platypush/backend/__init__.py
+++ b/platypush/backend/__init__.py
@@ -12,6 +12,7 @@ from threading import Thread, Event as ThreadEvent, get_ident
 from typing import Optional, Dict
 
 from platypush.bus import Bus
+from platypush.common import ExtensionWithManifest
 from platypush.config import Config
 from platypush.context import get_backend
 from platypush.message.event.zeroconf import ZeroconfServiceAddedEvent, ZeroconfServiceRemovedEvent
@@ -26,7 +27,7 @@ from platypush.message.request import Request
 from platypush.message.response import Response
 
 
-class Backend(Thread, EventGenerator):
+class Backend(Thread, EventGenerator, ExtensionWithManifest):
     """
     Parent class for backends.
 
@@ -53,6 +54,7 @@ class Backend(Thread, EventGenerator):
 
         self._thread_name = self.__class__.__name__
         EventGenerator.__init__(self)
+        ExtensionWithManifest.__init__(self)
         Thread.__init__(self, name=self._thread_name, daemon=True)
 
         # If no bus is specified, create an internal queue where
diff --git a/platypush/backend/adafruit/io.py b/platypush/backend/adafruit/io/__init__.py
similarity index 90%
rename from platypush/backend/adafruit/io.py
rename to platypush/backend/adafruit/io/__init__.py
index 47806341..a403ed86 100644
--- a/platypush/backend/adafruit/io.py
+++ b/platypush/backend/adafruit/io/__init__.py
@@ -1,3 +1,5 @@
+from typing import Optional
+
 from platypush.backend import Backend
 from platypush.context import get_plugin
 from platypush.message.event.adafruit import ConnectedEvent, DisconnectedEvent, \
@@ -30,8 +32,9 @@ class AdafruitIoBackend(Backend):
         """
 
         super().__init__(*args, **kwargs)
+        from Adafruit_IO import MQTTClient
         self.feeds = feeds
-        self._client = None
+        self._client: Optional[MQTTClient] = None
 
     def _init_client(self):
         if self._client:
@@ -57,12 +60,12 @@ class AdafruitIoBackend(Backend):
         return _handler
 
     def on_disconnect(self):
-        def _handler(client):
+        def _handler(*_, **__):
             self.bus.post(DisconnectedEvent())
 
         return _handler
 
-    def on_message(self, msg):
+    def on_message(self, *_, **__):
         # noinspection PyUnusedLocal
         def _handler(client, feed, data):
             try:
@@ -83,7 +86,9 @@ class AdafruitIoBackend(Backend):
         while not self.should_stop():
             try:
                 self._init_client()
+                # noinspection PyUnresolvedReferences
                 self._client.connect()
+                # noinspection PyUnresolvedReferences
                 self._client.loop_blocking()
             except Exception as e:
                 self.logger.exception(e)
diff --git a/platypush/backend/adafruit/io/manifest.yaml b/platypush/backend/adafruit/io/manifest.yaml
new file mode 100644
index 00000000..e019ab9c
--- /dev/null
+++ b/platypush/backend/adafruit/io/manifest.yaml
@@ -0,0 +1,12 @@
+manifest:
+  events:
+    platypush.message.event.adafruit.ConnectedEvent: when thebackend connects to the
+      Adafruit queue
+    platypush.message.event.adafruit.DisconnectedEvent: when thebackend disconnects
+      from the Adafruit queue
+    platypush.message.event.adafruit.FeedUpdateEvent: when anupdate event is received
+      on a monitored feed
+  install:
+    pip: []
+  package: platypush.backend.adafruit.io
+  type: backend
diff --git a/platypush/backend/alarm.py b/platypush/backend/alarm/__init__.py
similarity index 100%
rename from platypush/backend/alarm.py
rename to platypush/backend/alarm/__init__.py
diff --git a/platypush/backend/alarm/manifest.yaml b/platypush/backend/alarm/manifest.yaml
new file mode 100644
index 00000000..51f4e094
--- /dev/null
+++ b/platypush/backend/alarm/manifest.yaml
@@ -0,0 +1,10 @@
+manifest:
+  events:
+    platypush.message.event.alarm.AlarmDismissedEvent: when an alarm is dismissed.
+    platypush.message.event.alarm.AlarmSnoozedEvent: when an alarm is snoozed.
+    platypush.message.event.alarm.AlarmStartedEvent: when an alarm starts.
+    platypush.message.event.alarm.AlarmTimeoutEvent: when an alarm times out.
+  install:
+    pip: []
+  package: platypush.backend.alarm
+  type: backend
diff --git a/platypush/backend/assistant/__init__.py b/platypush/backend/assistant/__init__.py
index 0d7aa308..37589fd9 100644
--- a/platypush/backend/assistant/__init__.py
+++ b/platypush/backend/assistant/__init__.py
@@ -1,3 +1,4 @@
+from abc import ABC
 import threading
 from typing import Optional, Dict, Any, Tuple
 
diff --git a/platypush/backend/assistant/google.py b/platypush/backend/assistant/google/__init__.py
similarity index 100%
rename from platypush/backend/assistant/google.py
rename to platypush/backend/assistant/google/__init__.py
diff --git a/platypush/backend/assistant/google/manifest.yaml b/platypush/backend/assistant/google/manifest.yaml
new file mode 100644
index 00000000..1668b511
--- /dev/null
+++ b/platypush/backend/assistant/google/manifest.yaml
@@ -0,0 +1,26 @@
+manifest:
+  events:
+    platypush.message.event.assistant.AlarmEndEvent: when an alarm ends
+    platypush.message.event.assistant.AlarmStartedEvent: when an alarm starts
+    platypush.message.event.assistant.ConversationEndEvent: when a new conversation
+      ends
+    platypush.message.event.assistant.ConversationStartEvent: when a new conversation
+      starts
+    platypush.message.event.assistant.ConversationTimeoutEvent: when a conversation
+      times out
+    platypush.message.event.assistant.MicMutedEvent: when the microphone is muted.
+    platypush.message.event.assistant.MicUnmutedEvent: when the microphone is un-muted.
+    platypush.message.event.assistant.NoResponse: when a conversation returned no
+      response
+    platypush.message.event.assistant.ResponseEvent: when the assistant is speaking
+      a response
+    platypush.message.event.assistant.SpeechRecognizedEvent: when a new voice command
+      is recognized
+    platypush.message.event.assistant.TimerEndEvent: when a timer ends
+    platypush.message.event.assistant.TimerStartedEvent: when a timer starts
+  install:
+    pip:
+    - google-assistant-library
+    - google-assistant-sdk[samples]
+  package: platypush.backend.assistant.google
+  type: backend
diff --git a/platypush/backend/assistant/snowboy/manifest.yaml b/platypush/backend/assistant/snowboy/manifest.yaml
new file mode 100644
index 00000000..1a3fcebc
--- /dev/null
+++ b/platypush/backend/assistant/snowboy/manifest.yaml
@@ -0,0 +1,9 @@
+manifest:
+  events:
+    platypush.message.event.assistant.HotwordDetectedEvent: whenever the hotword has
+      been detected
+  install:
+    pip:
+    - snowboy
+  package: platypush.backend.assistant.snowboy
+  type: backend
diff --git a/platypush/backend/bluetooth/__init__.py b/platypush/backend/bluetooth/__init__.py
index 4e67b955..f62bdd4c 100644
--- a/platypush/backend/bluetooth/__init__.py
+++ b/platypush/backend/bluetooth/__init__.py
@@ -83,7 +83,7 @@ class BluetoothBackend(Backend, Server):
             self.connect(connection, request)
             self.bus.post(BluetoothDeviceConnectedEvent(address=address[0], port=address[1]))
         elif isinstance(request, requests.Disconnect):
-            self.disconnect(connection)
+            self.disconnect(connection, request)
             self.bus.post(BluetoothDeviceDisconnectedEvent(address=address[0], port=address[1]))
         elif isinstance(request, requests.Put):
             self.bus.post(BluetoothFilePutRequestEvent(address=address[0], port=address[1]))
diff --git a/platypush/backend/bluetooth/fileserver.py b/platypush/backend/bluetooth/fileserver/__init__.py
similarity index 100%
rename from platypush/backend/bluetooth/fileserver.py
rename to platypush/backend/bluetooth/fileserver/__init__.py
diff --git a/platypush/backend/bluetooth/fileserver/manifest.yaml b/platypush/backend/bluetooth/fileserver/manifest.yaml
new file mode 100644
index 00000000..c47aa856
--- /dev/null
+++ b/platypush/backend/bluetooth/fileserver/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pybluez
+    - pyobex
+  package: platypush.backend.bluetooth.fileserver
+  type: backend
diff --git a/platypush/backend/bluetooth/pushserver.py b/platypush/backend/bluetooth/pushserver/__init__.py
similarity index 100%
rename from platypush/backend/bluetooth/pushserver.py
rename to platypush/backend/bluetooth/pushserver/__init__.py
diff --git a/platypush/backend/bluetooth/pushserver/manifest.yaml b/platypush/backend/bluetooth/pushserver/manifest.yaml
new file mode 100644
index 00000000..4e5ef631
--- /dev/null
+++ b/platypush/backend/bluetooth/pushserver/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pybluez
+    - pyobex
+  package: platypush.backend.bluetooth.pushserver
+  type: backend
diff --git a/platypush/backend/bluetooth/scanner/ble.py b/platypush/backend/bluetooth/scanner/ble/__init__.py
similarity index 100%
rename from platypush/backend/bluetooth/scanner/ble.py
rename to platypush/backend/bluetooth/scanner/ble/__init__.py
diff --git a/platypush/backend/bluetooth/scanner/ble/manifest.yaml b/platypush/backend/bluetooth/scanner/ble/manifest.yaml
new file mode 100644
index 00000000..65be3ca9
--- /dev/null
+++ b/platypush/backend/bluetooth/scanner/ble/manifest.yaml
@@ -0,0 +1,10 @@
+manifest:
+  events:
+    platypush.message.event.bluetooth.BluetoothDeviceFoundEvent: when a new bluetooth
+      device is found.
+    platypush.message.event.bluetooth.BluetoothDeviceLostEvent: when a bluetooth device
+      is lost.
+  install:
+    pip: []
+  package: platypush.backend.bluetooth.scanner.ble
+  type: backend
diff --git a/platypush/backend/bluetooth/scanner/manifest.yaml b/platypush/backend/bluetooth/scanner/manifest.yaml
new file mode 100644
index 00000000..1a3c6c85
--- /dev/null
+++ b/platypush/backend/bluetooth/scanner/manifest.yaml
@@ -0,0 +1,10 @@
+manifest:
+  events:
+    platypush.message.event.bluetooth.BluetoothDeviceFoundEvent: when a new bluetooth
+      device is found.
+    platypush.message.event.bluetooth.BluetoothDeviceLostEvent: when a bluetooth device
+      is lost.
+  install:
+    pip: []
+  package: platypush.backend.bluetooth.scanner
+  type: backend
diff --git a/platypush/backend/button/flic/__init__.py b/platypush/backend/button/flic/__init__.py
index bf9f1f67..3e9ef4d1 100644
--- a/platypush/backend/button/flic/__init__.py
+++ b/platypush/backend/button/flic/__init__.py
@@ -1,6 +1,3 @@
-import importlib
-
-from enum import Enum
 from threading import Timer
 from time import time
 
@@ -17,11 +14,14 @@ class ButtonFlicBackend(Backend):
 
     Triggers:
 
-        * :class:`platypush.message.event.button.flic.FlicButtonEvent` when a button is pressed. The event will also contain the press sequence (e.g. ``["ShortPressEvent", "LongPressEvent", "ShortPressEvent"]``)
+        * :class:`platypush.message.event.button.flic.FlicButtonEvent` when a button is pressed.
+            The event will also contain the press sequence
+            (e.g. ``["ShortPressEvent", "LongPressEvent", "ShortPressEvent"]``)
 
     Requires:
 
         * **fliclib** (https://github.com/50ButtonsEach/fliclib-linux-hci). For the backend to work properly you need to have the ``flicd`` daemon from the fliclib running, and you have to first pair the buttons with your device using any of the scanners provided by the library.
+
     """
 
     _long_press_timeout = 0.3
@@ -87,6 +87,7 @@ class ButtonFlicBackend(Backend):
         return _f
 
     def _on_event(self):
+        # noinspection PyUnusedLocal
         def _f(bd_addr, channel, click_type, was_queued, time_diff):
             if was_queued:
                 return
diff --git a/platypush/backend/button/flic/fliclib/aioflic.py b/platypush/backend/button/flic/fliclib/aioflic.py
index 424fd11a..9099c0f1 100644
--- a/platypush/backend/button/flic/fliclib/aioflic.py
+++ b/platypush/backend/button/flic/fliclib/aioflic.py
@@ -15,6 +15,7 @@ from enum import Enum
 from collections import namedtuple
 import struct
 import itertools
+import threading
 
 
 class CreateConnectionChannelError(Enum):
diff --git a/platypush/backend/button/flic/manifest.yaml b/platypush/backend/button/flic/manifest.yaml
new file mode 100644
index 00000000..b95026b9
--- /dev/null
+++ b/platypush/backend/button/flic/manifest.yaml
@@ -0,0 +1,9 @@
+manifest:
+  events:
+    platypush.message.event.button.flic.FlicButtonEvent: when a button is pressed.The
+      event will also contain the press sequence(e.g. ``["ShortPressEvent", "LongPressEvent",
+      "ShortPressEvent"]``)
+  install:
+    pip: []
+  package: platypush.backend.button.flic
+  type: backend
diff --git a/platypush/backend/camera/pi.py b/platypush/backend/camera/pi/__init__.py
similarity index 98%
rename from platypush/backend/camera/pi.py
rename to platypush/backend/camera/pi/__init__.py
index c68a94a6..87e8ec53 100644
--- a/platypush/backend/camera/pi.py
+++ b/platypush/backend/camera/pi/__init__.py
@@ -18,7 +18,6 @@ class CameraPiBackend(Backend):
     Requires:
 
         * **picamera** (``pip install picamera``)
-        * **redis** (``pip install redis``) for inter-process communication with the camera process
 
     This backend is **DEPRECATED**. Use the plugin :class:`platypush.plugins.camera.pi.CameraPiPlugin` instead to run
     Pi camera actions. If you want to start streaming the camera on application start then simply create an event hook
diff --git a/platypush/backend/camera/pi/manifest.yaml b/platypush/backend/camera/pi/manifest.yaml
new file mode 100644
index 00000000..b48cf3c6
--- /dev/null
+++ b/platypush/backend/camera/pi/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - picamera
+  package: platypush.backend.camera.pi
+  type: backend
diff --git a/platypush/backend/chat/telegram.py b/platypush/backend/chat/telegram/__init__.py
similarity index 100%
rename from platypush/backend/chat/telegram.py
rename to platypush/backend/chat/telegram/__init__.py
diff --git a/platypush/backend/chat/telegram/manifest.yaml b/platypush/backend/chat/telegram/manifest.yaml
new file mode 100644
index 00000000..5d8d7ac2
--- /dev/null
+++ b/platypush/backend/chat/telegram/manifest.yaml
@@ -0,0 +1,19 @@
+manifest:
+  events:
+    platypush.message.event.chat.telegram.CommandMessageEvent: when a command message
+      is received.
+    platypush.message.event.chat.telegram.ContactMessageEvent: when a contact is received.
+    platypush.message.event.chat.telegram.DocumentMessageEvent: when a document is
+      received.
+    platypush.message.event.chat.telegram.GroupCreatedEvent: when the bot is invited
+      to a new group.
+    platypush.message.event.chat.telegram.LocationMessageEvent: when a location is
+      received.
+    platypush.message.event.chat.telegram.PhotoMessageEvent: when a photo is received.
+    platypush.message.event.chat.telegram.TextMessageEvent: when a text message is
+      received.
+    platypush.message.event.chat.telegram.VideoMessageEvent: when a video is received.
+  install:
+    pip: []
+  package: platypush.backend.chat.telegram
+  type: backend
diff --git a/platypush/backend/clipboard.py b/platypush/backend/clipboard/__init__.py
similarity index 100%
rename from platypush/backend/clipboard.py
rename to platypush/backend/clipboard/__init__.py
diff --git a/platypush/backend/clipboard/manifest.yaml b/platypush/backend/clipboard/manifest.yaml
new file mode 100644
index 00000000..03eeb516
--- /dev/null
+++ b/platypush/backend/clipboard/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.clipboard.ClipboardEvent: on clipboard update.
+  install:
+    pip:
+    - pyperclip
+  package: platypush.backend.clipboard
+  type: backend
diff --git a/platypush/backend/covid19.py b/platypush/backend/covid19/__init__.py
similarity index 100%
rename from platypush/backend/covid19.py
rename to platypush/backend/covid19/__init__.py
diff --git a/platypush/backend/covid19/manifest.yaml b/platypush/backend/covid19/manifest.yaml
new file mode 100644
index 00000000..e9290931
--- /dev/null
+++ b/platypush/backend/covid19/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events:
+    platypush.message.event.covid19.Covid19UpdateEvent: when new data is available.
+  install:
+    pip: []
+  package: platypush.backend.covid19
+  type: backend
diff --git a/platypush/backend/dbus.py b/platypush/backend/dbus/__init__.py
similarity index 100%
rename from platypush/backend/dbus.py
rename to platypush/backend/dbus/__init__.py
diff --git a/platypush/backend/dbus/manifest.yaml b/platypush/backend/dbus/manifest.yaml
new file mode 100644
index 00000000..0872acd9
--- /dev/null
+++ b/platypush/backend/dbus/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - dbus-python
+  package: platypush.backend.dbus
+  type: backend
diff --git a/platypush/backend/file/monitor/manifest.yaml b/platypush/backend/file/monitor/manifest.yaml
new file mode 100644
index 00000000..92b066d1
--- /dev/null
+++ b/platypush/backend/file/monitor/manifest.yaml
@@ -0,0 +1,10 @@
+manifest:
+  events:
+    platypush.message.event.file.FileSystemCreateEvent: if a resource is created.
+    platypush.message.event.file.FileSystemDeleteEvent: if a resource is removed.
+    platypush.message.event.file.FileSystemModifyEvent: if a resource is modified.
+  install:
+    pip:
+    - watchdog
+  package: platypush.backend.file.monitor
+  type: backend
diff --git a/platypush/backend/foursquare.py b/platypush/backend/foursquare/__init__.py
similarity index 100%
rename from platypush/backend/foursquare.py
rename to platypush/backend/foursquare/__init__.py
diff --git a/platypush/backend/foursquare/manifest.yaml b/platypush/backend/foursquare/manifest.yaml
new file mode 100644
index 00000000..0690cc93
--- /dev/null
+++ b/platypush/backend/foursquare/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.foursquare.FoursquareCheckinEvent: when a new check-in
+      occurs.
+  install:
+    pip: []
+  package: platypush.backend.foursquare
+  type: backend
diff --git a/platypush/backend/github.py b/platypush/backend/github/__init__.py
similarity index 100%
rename from platypush/backend/github.py
rename to platypush/backend/github/__init__.py
diff --git a/platypush/backend/github/manifest.yaml b/platypush/backend/github/manifest.yaml
new file mode 100644
index 00000000..18eced00
--- /dev/null
+++ b/platypush/backend/github/manifest.yaml
@@ -0,0 +1,32 @@
+manifest:
+  events:
+    platypush.message.event.github.GithubCommitCommentEvent: when a new commit comment
+      is created.
+    platypush.message.event.github.GithubCreateEvent: when a tag or branch is created.
+    platypush.message.event.github.GithubDeleteEvent: when a tag or branch is deleted.
+    platypush.message.event.github.GithubEvent: for any event that doesn't fall in
+      the above categories(``event_type`` will be set accordingly).
+    platypush.message.event.github.GithubForkEvent: when a user forks a repository.
+    platypush.message.event.github.GithubIssueCommentEvent: when new activity happens
+      on an issue comment.
+    platypush.message.event.github.GithubIssueEvent: when new repository issue activity
+      happens.
+    platypush.message.event.github.GithubMemberEvent: when new repository collaborators
+      activity happens.
+    platypush.message.event.github.GithubPublicEvent: when a repository goes public.
+    platypush.message.event.github.GithubPullRequestEvent: when new pull request related
+      activity happens.
+    platypush.message.event.github.GithubPullRequestReviewCommentEvent: when activity
+      happens on a pullrequest commit.
+    platypush.message.event.github.GithubPushEvent: when a new push is created.
+    platypush.message.event.github.GithubReleaseEvent: when a new release happens.
+    platypush.message.event.github.GithubSponsorshipEvent: when new sponsorship related
+      activity happens.
+    platypush.message.event.github.GithubWatchEvent: when someone stars/starts watching
+      a repository.
+    platypush.message.event.github.GithubWikiEvent: when new activity happens on a
+      repository wiki.
+  install:
+    pip: []
+  package: platypush.backend.github
+  type: backend
diff --git a/platypush/backend/google/fit.py b/platypush/backend/google/fit/__init__.py
similarity index 100%
rename from platypush/backend/google/fit.py
rename to platypush/backend/google/fit/__init__.py
diff --git a/platypush/backend/google/fit/manifest.yaml b/platypush/backend/google/fit/manifest.yaml
new file mode 100644
index 00000000..7a5b3ef0
--- /dev/null
+++ b/platypush/backend/google/fit/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.google.fit.GoogleFitEvent: when a newdata point is received
+      on one of the registered streams.
+  install:
+    pip: []
+  package: platypush.backend.google.fit
+  type: backend
diff --git a/platypush/backend/google/pubsub.py b/platypush/backend/google/pubsub/__init__.py
similarity index 100%
rename from platypush/backend/google/pubsub.py
rename to platypush/backend/google/pubsub/__init__.py
diff --git a/platypush/backend/google/pubsub/manifest.yaml b/platypush/backend/google/pubsub/manifest.yaml
new file mode 100644
index 00000000..c7fd5c41
--- /dev/null
+++ b/platypush/backend/google/pubsub/manifest.yaml
@@ -0,0 +1,9 @@
+manifest:
+  events:
+    platypush.message.event.google.pubsub.GooglePubsubMessageEvent: when a new message
+      is received ona subscribed topic.
+  install:
+    pip:
+    - google-cloud-pubsub
+  package: platypush.backend.google.pubsub
+  type: backend
diff --git a/platypush/backend/gps.py b/platypush/backend/gps/__init__.py
similarity index 100%
rename from platypush/backend/gps.py
rename to platypush/backend/gps/__init__.py
diff --git a/platypush/backend/gps/manifest.yaml b/platypush/backend/gps/manifest.yaml
new file mode 100644
index 00000000..f4d1dedf
--- /dev/null
+++ b/platypush/backend/gps/manifest.yaml
@@ -0,0 +1,16 @@
+manifest:
+  events:
+    platypush.message.event.gps.GPSDeviceEvent: when a GPS device is connected or
+      updated
+    platypush.message.event.gps.GPSUpdateEvent: when a GPS device has new data
+    platypush.message.event.gps.GPSVersionEvent: when a GPS device advertises its
+      version data
+  install:
+    pip:
+      - gps
+    pacman:
+      - gpsd
+    apt:
+      - gpsd
+  package: platypush.backend.gps
+  type: backend
diff --git a/platypush/backend/http/__init__.py b/platypush/backend/http/__init__.py
index c898ab20..27336cfb 100644
--- a/platypush/backend/http/__init__.py
+++ b/platypush/backend/http/__init__.py
@@ -4,6 +4,11 @@ import threading
 
 from multiprocessing import Process
 
+try:
+    from websockets.exceptions import ConnectionClosed
+except ImportError:
+    from websockets import ConnectionClosed
+
 from platypush.backend import Backend
 from platypush.backend.http.app import application
 from platypush.context import get_or_create_event_loop
@@ -146,9 +151,7 @@ class HttpBackend(Backend):
     Requires:
 
         * **flask** (``pip install flask``)
-        * **redis** (``pip install redis``)
-        * **websockets** (``pip install websockets``)
-        * **python-dateutil** (``pip install python-dateutil``)
+        * **bcrypt** (``pip install bcrypt``)
         * **magic** (``pip install python-magic``), optional, for MIME type
             support if you want to enable media streaming
         * **uwsgi** (``pip install uwsgi`` plus uwsgi server installed on your
@@ -328,8 +331,6 @@ class HttpBackend(Backend):
 
     def notify_web_clients(self, event):
         """ Notify all the connected web clients (over websocket) of a new event """
-        import websockets
-
         async def send_event(ws):
             try:
                 self._acquire_websocket_lock(ws)
@@ -345,7 +346,7 @@ class HttpBackend(Backend):
         for _ws in wss:
             try:
                 loop.run_until_complete(send_event(_ws))
-            except websockets.exceptions.ConnectionClosed:
+            except ConnectionClosed:
                 self.logger.warning('Websocket client {} connection lost'.format(_ws.remote_address))
                 self.active_websockets.remove(_ws)
                 if _ws.remote_address in self._websocket_locks:
@@ -365,7 +366,7 @@ class HttpBackend(Backend):
 
             try:
                 await websocket.recv()
-            except websockets.exceptions.ConnectionClosed:
+            except ConnectionClosed:
                 self.logger.info('Websocket client {} closed connection'.format(address))
                 self.active_websockets.remove(websocket)
                 if address in self._websocket_locks:
diff --git a/platypush/backend/http/app/routes/plugins/camera/ir/mlx90640.py b/platypush/backend/http/app/routes/plugins/camera/ir/mlx90640.py
index 9dce0a44..eada9849 100644
--- a/platypush/backend/http/app/routes/plugins/camera/ir/mlx90640.py
+++ b/platypush/backend/http/app/routes/plugins/camera/ir/mlx90640.py
@@ -4,7 +4,7 @@ from platypush.backend.http.app import template_folder
 from platypush.backend.http.app.routes.plugins.camera import get_photo, get_video
 from platypush.backend.http.app.utils import authenticate
 
-camera_ir_mlx90640 = Blueprint('camera.ir.mlx90640', __name__, template_folder=template_folder)
+camera_ir_mlx90640 = Blueprint('camera-ir-mlx90640', __name__, template_folder=template_folder)
 
 # Declare routes list
 __routes__ = [
diff --git a/platypush/backend/http/app/routes/plugins/camera/pi.py b/platypush/backend/http/app/routes/plugins/camera/pi.py
index aff9405e..0e3c2234 100644
--- a/platypush/backend/http/app/routes/plugins/camera/pi.py
+++ b/platypush/backend/http/app/routes/plugins/camera/pi.py
@@ -8,7 +8,7 @@ from platypush.backend.http.app.utils import authenticate, send_request
 from platypush.config import Config
 from platypush.plugins.camera.pi import CameraPiPlugin
 
-camera_pi = Blueprint('camera.pi', __name__, template_folder=template_folder)
+camera_pi = Blueprint('camera-pi', __name__, template_folder=template_folder)
 
 # Declare routes list
 __routes__ = [
diff --git a/platypush/backend/http/app/routes/plugins/media/__init__.py b/platypush/backend/http/app/routes/plugins/media/__init__.py
index d160af40..67d82ca6 100644
--- a/platypush/backend/http/app/routes/plugins/media/__init__.py
+++ b/platypush/backend/http/app/routes/plugins/media/__init__.py
@@ -2,7 +2,7 @@ import hashlib
 import json
 import threading
 
-from flask import Response, render_template
+from flask import Response
 
 from platypush.backend.http.app.utils import get_remote_base_url, logger, \
     send_message
diff --git a/platypush/backend/http/manifest.yaml b/platypush/backend/http/manifest.yaml
new file mode 100644
index 00000000..5215fbd3
--- /dev/null
+++ b/platypush/backend/http/manifest.yaml
@@ -0,0 +1,9 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - flask
+    - bcrypt
+    - python-magic
+  package: platypush.backend.http
+  type: backend
diff --git a/platypush/backend/http/media/handlers/__init__.py b/platypush/backend/http/media/handlers/__init__.py
index 8c1f05e8..f6e8b8e3 100644
--- a/platypush/backend/http/media/handlers/__init__.py
+++ b/platypush/backend/http/media/handlers/__init__.py
@@ -1,5 +1,6 @@
 import logging
 
+
 class MediaHandler:
     """
     Abstract class to manage media handlers that can be streamed over the HTTP
@@ -57,7 +58,7 @@ class MediaHandler:
         for attr in ['name', 'source', 'mime_type', 'url', 'subtitles',
                      'prefix_handlers', 'media_id']:
             if hasattr(self, attr):
-                yield (attr, getattr(self, attr))
+                yield attr, getattr(self, attr)
 
 
 from .file import FileHandler
diff --git a/platypush/backend/http/poll/__init__.py b/platypush/backend/http/poll/__init__.py
index facef9a8..2c39678c 100644
--- a/platypush/backend/http/poll/__init__.py
+++ b/platypush/backend/http/poll/__init__.py
@@ -34,7 +34,7 @@ class HttpPollBackend(Backend):
                 -
                     # Poll for updates on an RSS feed
                     type: platypush.backend.http.request.rss.RssUpdates
-                    url: http://www.theguardian.com/rss/world
+                    url: https://www.theguardian.com/rss/world
                     title: The Guardian - World News
                     poll_seconds: 120
                     max_entries: 10
diff --git a/platypush/backend/http/poll/manifest.yaml b/platypush/backend/http/poll/manifest.yaml
new file mode 100644
index 00000000..fb5b0a2d
--- /dev/null
+++ b/platypush/backend/http/poll/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.backend.http.poll
+  type: backend
diff --git a/platypush/backend/http/request/ota/__init__.py b/platypush/backend/http/request/ota/__init__.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/platypush/backend/http/request/ota/booking/__init__.py b/platypush/backend/http/request/ota/booking/__init__.py
deleted file mode 100644
index ea92e545..00000000
--- a/platypush/backend/http/request/ota/booking/__init__.py
+++ /dev/null
@@ -1,48 +0,0 @@
-import datetime
-import dateutil.parser
-import json
-
-from platypush.backend.http.request import JsonHttpRequest
-from platypush.message.event.http.ota.booking import NewReservationEvent
-
-
-class GetReservationUpdates(JsonHttpRequest):
-    """ Gets the reservation updates """
-    def __init__(self, hotel_id, token, *args, **kwargs):
-        self.hotel_id = hotel_id
-        self.token = token
-        self.seen_entries = set()
-        self.last_update = None
-
-        args = {
-            'method': 'get',
-            'url': 'https://hub-api.booking.com/v1/hotels/{}/reservations'.format(self.hotel_id),
-            'headers': { 'X-Booking-Auth-Token': self.token },
-            'params': { 'updatedSince': datetime.date.today().isoformat() }
-        }
-
-        super().__init__(args=args, **kwargs)
-
-
-    def get_new_items(self, response):
-        response = response.json()
-        entries = []
-
-        for entry in response:
-            update_timestamp = dateutil.parser.parse(entry['updateDate'])
-            last_update_timestamp = dateutil.parser.parse(self.last_update['updateDate']) \
-                if self.last_update else None
-
-            if self.last_update is None \
-                    or (update_timestamp > last_update_timestamp
-                        and not (
-                            entry['booker']['email'] == self.last_update['booker']['email']
-                            and entry['status'] == self.last_update['status'])):
-                self.last_update = entry
-                entries.append(entry)
-
-        return NewReservationEvent(dict(self), entries)
-
-
-# vim:sw=4:ts=4:et:
-
diff --git a/platypush/backend/http/request/rss/__init__.py b/platypush/backend/http/request/rss/__init__.py
index 276d8cf0..b16565dc 100644
--- a/platypush/backend/http/request/rss/__init__.py
+++ b/platypush/backend/http/request/rss/__init__.py
@@ -239,7 +239,10 @@ class RssUpdates(HttpRequest):
                         f.write(content)
                 elif self.digest_format == 'pdf':
                     from weasyprint import HTML, CSS
-                    from weasyprint.fonts import FontConfiguration
+                    try:
+                        from weasyprint.fonts import FontConfiguration
+                    except ImportError:
+                        from weasyprint.document import FontConfiguration
 
                     body_style = 'body { ' + self.body_style + ' }'
                     font_config = FontConfiguration()
diff --git a/platypush/backend/inotify.py b/platypush/backend/inotify/__init__.py
similarity index 100%
rename from platypush/backend/inotify.py
rename to platypush/backend/inotify/__init__.py
diff --git a/platypush/backend/inotify/manifest.yaml b/platypush/backend/inotify/manifest.yaml
new file mode 100644
index 00000000..d25b4247
--- /dev/null
+++ b/platypush/backend/inotify/manifest.yaml
@@ -0,0 +1,15 @@
+manifest:
+  events:
+    platypush.message.event.inotify.InotifyAccessEvent: if a resource is accessed
+    platypush.message.event.inotify.InotifyCloseEvent: if a resource is closed
+    platypush.message.event.inotify.InotifyCreateEvent: if a resource is created
+    platypush.message.event.inotify.InotifyDeleteEvent: if a resource is removed
+    platypush.message.event.inotify.InotifyModifyEvent: if a resource is modified
+    platypush.message.event.inotify.InotifyOpenEvent: if a resource is opened
+    platypush.message.event.inotify.InotifyPermissionsChangeEvent: if the permissions
+      of a resource are changed
+  install:
+    pip:
+    - inotify
+  package: platypush.backend.inotify
+  type: backend
diff --git a/platypush/backend/joystick/jstest.py b/platypush/backend/joystick/jstest/__init__.py
similarity index 100%
rename from platypush/backend/joystick/jstest.py
rename to platypush/backend/joystick/jstest/__init__.py
diff --git a/platypush/backend/joystick/jstest/manifest.yaml b/platypush/backend/joystick/jstest/manifest.yaml
new file mode 100644
index 00000000..8e97424b
--- /dev/null
+++ b/platypush/backend/joystick/jstest/manifest.yaml
@@ -0,0 +1,21 @@
+manifest:
+  events:
+    platypush.message.event.joystick.JoystickAxisEvent: when an axis value of the
+      joystick changes.
+    platypush.message.event.joystick.JoystickButtonPressedEvent: when a joystick button
+      is pressed.
+    platypush.message.event.joystick.JoystickButtonReleasedEvent: when a joystick
+      button is released.
+    platypush.message.event.joystick.JoystickConnectedEvent: when the joystick is
+      connected.
+    platypush.message.event.joystick.JoystickDisconnectedEvent: when the joystick
+      is disconnected.
+    platypush.message.event.joystick.JoystickStateEvent: when the state of the joystick
+      (i.e. some of itsaxes or buttons values) changes.
+  install:
+    apt:
+      - joystick
+    pacman:
+      - jsutils
+  package: platypush.backend.joystick.jstest
+  type: backend
diff --git a/platypush/backend/joystick/linux.py b/platypush/backend/joystick/linux/__init__.py
similarity index 100%
rename from platypush/backend/joystick/linux.py
rename to platypush/backend/joystick/linux/__init__.py
diff --git a/platypush/backend/joystick/linux/manifest.yaml b/platypush/backend/joystick/linux/manifest.yaml
new file mode 100644
index 00000000..227b328a
--- /dev/null
+++ b/platypush/backend/joystick/linux/manifest.yaml
@@ -0,0 +1,16 @@
+manifest:
+  events:
+    platypush.message.event.joystick.JoystickAxisEvent: when an axis value of the
+      joystick changes.
+    platypush.message.event.joystick.JoystickButtonPressedEvent: when a joystick button
+      is pressed.
+    platypush.message.event.joystick.JoystickButtonReleasedEvent: when a joystick
+      button is released.
+    platypush.message.event.joystick.JoystickConnectedEvent: when the joystick is
+      connected.
+    platypush.message.event.joystick.JoystickDisconnectedEvent: when the joystick
+      is disconnected.
+  install:
+    pip: []
+  package: platypush.backend.joystick.linux
+  type: backend
diff --git a/platypush/backend/joystick/manifest.yaml b/platypush/backend/joystick/manifest.yaml
new file mode 100644
index 00000000..c3fb77fe
--- /dev/null
+++ b/platypush/backend/joystick/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.joystick.JoystickEvent: when a new joystick event is received
+  install:
+    pip:
+    - inputs
+  package: platypush.backend.joystick
+  type: backend
diff --git a/platypush/backend/kafka/__init__.py b/platypush/backend/kafka/__init__.py
index 050d39e6..bd4af2c9 100644
--- a/platypush/backend/kafka/__init__.py
+++ b/platypush/backend/kafka/__init__.py
@@ -1,4 +1,3 @@
-import json
 import logging
 import time
 
diff --git a/platypush/backend/kafka/manifest.yaml b/platypush/backend/kafka/manifest.yaml
new file mode 100644
index 00000000..e836bf91
--- /dev/null
+++ b/platypush/backend/kafka/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - kafka
+  package: platypush.backend.kafka
+  type: backend
diff --git a/platypush/backend/light/hue.py b/platypush/backend/light/hue/__init__.py
similarity index 100%
rename from platypush/backend/light/hue.py
rename to platypush/backend/light/hue/__init__.py
diff --git a/platypush/backend/light/hue/manifest.yaml b/platypush/backend/light/hue/manifest.yaml
new file mode 100644
index 00000000..5d5e4ed0
--- /dev/null
+++ b/platypush/backend/light/hue/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.light.LightStatusChangeEvent: when thestatus of a lightbulb
+      changes
+  install:
+    pip: []
+  package: platypush.backend.light.hue
+  type: backend
diff --git a/platypush/backend/linode.py b/platypush/backend/linode/__init__.py
similarity index 100%
rename from platypush/backend/linode.py
rename to platypush/backend/linode/__init__.py
diff --git a/platypush/backend/linode/manifest.yaml b/platypush/backend/linode/manifest.yaml
new file mode 100644
index 00000000..8777eb55
--- /dev/null
+++ b/platypush/backend/linode/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.linode.LinodeInstanceStatusChanged: when the status of
+      an instance changes.
+  install:
+    pip: []
+  package: platypush.backend.linode
+  type: backend
diff --git a/platypush/backend/log/http.py b/platypush/backend/log/http/__init__.py
similarity index 100%
rename from platypush/backend/log/http.py
rename to platypush/backend/log/http/__init__.py
diff --git a/platypush/backend/log/http/manifest.yaml b/platypush/backend/log/http/manifest.yaml
new file mode 100644
index 00000000..ddf01ec1
--- /dev/null
+++ b/platypush/backend/log/http/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.log.http.HttpLogEvent: when a new log line is created.
+  install:
+    pip:
+    - watchdog
+  package: platypush.backend.log.http
+  type: backend
diff --git a/platypush/backend/mail.py b/platypush/backend/mail/__init__.py
similarity index 100%
rename from platypush/backend/mail.py
rename to platypush/backend/mail/__init__.py
diff --git a/platypush/backend/mail/manifest.yaml b/platypush/backend/mail/manifest.yaml
new file mode 100644
index 00000000..a471c664
--- /dev/null
+++ b/platypush/backend/mail/manifest.yaml
@@ -0,0 +1,10 @@
+manifest:
+  events:
+    platypush.message.event.mail.MailFlaggedEvent: when a message is marked as flagged/starred.
+    platypush.message.event.mail.MailReceivedEvent: when a new message is received.
+    platypush.message.event.mail.MailSeenEvent: when a message is marked as seen.
+    platypush.message.event.mail.MailUnflaggedEvent: when a message is marked as unflagged/unstarred.
+  install:
+    pip: []
+  package: platypush.backend.mail
+  type: backend
diff --git a/platypush/backend/midi.py b/platypush/backend/midi/__init__.py
similarity index 98%
rename from platypush/backend/midi.py
rename to platypush/backend/midi/__init__.py
index 13551814..30db06ac 100644
--- a/platypush/backend/midi.py
+++ b/platypush/backend/midi/__init__.py
@@ -120,7 +120,7 @@ class MidiBackend(Backend):
                 self.logger.exception(e)
 
         if self.midi:
-            self.midi.close_port(self.port_number)
+            self.midi.close_port()
             self.midi = None
 
 
diff --git a/platypush/backend/midi/manifest.yaml b/platypush/backend/midi/manifest.yaml
new file mode 100644
index 00000000..246262ab
--- /dev/null
+++ b/platypush/backend/midi/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.midi.MidiMessageEvent: when a new MIDI event is received
+  install:
+    pip:
+    - rtmidi
+  package: platypush.backend.midi
+  type: backend
diff --git a/platypush/backend/mqtt.py b/platypush/backend/mqtt/__init__.py
similarity index 100%
rename from platypush/backend/mqtt.py
rename to platypush/backend/mqtt/__init__.py
diff --git a/platypush/backend/mqtt/manifest.yaml b/platypush/backend/mqtt/manifest.yaml
new file mode 100644
index 00000000..d2bc08f4
--- /dev/null
+++ b/platypush/backend/mqtt/manifest.yaml
@@ -0,0 +1,9 @@
+manifest:
+  events:
+    platypush.message.event.mqtt.MQTTMessageEvent: when a newmessage is received on
+      one of the custom listeners
+  install:
+    pip:
+    - paho-mqtt
+  package: platypush.backend.mqtt
+  type: backend
diff --git a/platypush/backend/music/mopidy.py b/platypush/backend/music/mopidy/__init__.py
similarity index 98%
rename from platypush/backend/music/mopidy.py
rename to platypush/backend/music/mopidy/__init__.py
index f31905b5..0448038a 100644
--- a/platypush/backend/music/mopidy.py
+++ b/platypush/backend/music/mopidy/__init__.py
@@ -2,6 +2,8 @@ import json
 import re
 import threading
 
+import websocket
+
 from platypush.backend import Backend
 from platypush.message.event.music import MusicPlayEvent, MusicPauseEvent, \
     MusicStopEvent, NewPlayingTrackEvent, PlaylistChangeEvent, VolumeChangeEvent, \
@@ -32,7 +34,7 @@ class MusicMopidyBackend(Backend):
         * :class:`platypush.message.event.music.SeekChangeEvent` if a track seek event occurs
 
     Requires:
-        * **websocket-client** (``pip install websocket-client``)
+
         * Mopidy installed and the HTTP service enabled
     """
 
@@ -88,7 +90,6 @@ class MusicMopidyBackend(Backend):
         return conv_track
 
     def _communicate(self, msg):
-        import websocket
 
         if isinstance(msg, str):
             msg = json.loads(msg)
@@ -242,8 +243,6 @@ class MusicMopidyBackend(Backend):
         return hndl
 
     def _connect(self):
-        import websocket
-
         if not self._ws:
             self._ws = websocket.WebSocketApp(self.url,
                                               on_open=self._on_open(),
diff --git a/platypush/backend/music/mopidy/manifest.yaml b/platypush/backend/music/mopidy/manifest.yaml
new file mode 100644
index 00000000..c34a18da
--- /dev/null
+++ b/platypush/backend/music/mopidy/manifest.yaml
@@ -0,0 +1,17 @@
+manifest:
+  events:
+    platypush.message.event.music.MusicPauseEvent: if the playback state changed to
+      pause
+    platypush.message.event.music.MusicPlayEvent: if the playback state changed to
+      play
+    platypush.message.event.music.MusicStopEvent: if the playback state changed to
+      stop
+    platypush.message.event.music.MuteChangeEvent: if the mute status has changed
+    platypush.message.event.music.NewPlayingTrackEvent: if a new track is being played
+    platypush.message.event.music.PlaylistChangeEvent: if the main playlist has changed
+    platypush.message.event.music.SeekChangeEvent: if a track seek event occurs
+    platypush.message.event.music.VolumeChangeEvent: if the main volume has changed
+  install:
+    pip: []
+  package: platypush.backend.music.mopidy
+  type: backend
diff --git a/platypush/backend/music/mpd/manifest.yaml b/platypush/backend/music/mpd/manifest.yaml
new file mode 100644
index 00000000..4120bc3a
--- /dev/null
+++ b/platypush/backend/music/mpd/manifest.yaml
@@ -0,0 +1,16 @@
+manifest:
+  events:
+    platypush.message.event.music.MusicPauseEvent: if the playback state changed to
+      pause
+    platypush.message.event.music.MusicPlayEvent: if the playback state changed to
+      play
+    platypush.message.event.music.MusicStopEvent: if the playback state changed to
+      stop
+    platypush.message.event.music.NewPlayingTrackEvent: if a new track is being played
+    platypush.message.event.music.PlaylistChangeEvent: if the main playlist has changed
+    platypush.message.event.music.VolumeChangeEvent: if the main volume has changed
+  install:
+    pip:
+    - python-mpd2
+  package: platypush.backend.music.mpd
+  type: backend
diff --git a/platypush/backend/music/snapcast.py b/platypush/backend/music/snapcast/__init__.py
similarity index 100%
rename from platypush/backend/music/snapcast.py
rename to platypush/backend/music/snapcast/__init__.py
diff --git a/platypush/backend/music/snapcast/manifest.yaml b/platypush/backend/music/snapcast/manifest.yaml
new file mode 100644
index 00000000..509f1256
--- /dev/null
+++ b/platypush/backend/music/snapcast/manifest.yaml
@@ -0,0 +1,15 @@
+manifest:
+  events:
+    platypush.message.event.music.snapcast.ClientConnectedEvent: ''
+    platypush.message.event.music.snapcast.ClientDisconnectedEvent: ''
+    platypush.message.event.music.snapcast.ClientLatencyChangeEvent: ''
+    platypush.message.event.music.snapcast.ClientNameChangeEvent: ''
+    platypush.message.event.music.snapcast.ClientVolumeChangeEvent: ''
+    platypush.message.event.music.snapcast.GroupMuteChangeEvent: ''
+    platypush.message.event.music.snapcast.GroupStreamChangeEvent: ''
+    platypush.message.event.music.snapcast.ServerUpdateEvent: ''
+    platypush.message.event.music.snapcast.StreamUpdateEvent: ''
+  install:
+    pip: []
+  package: platypush.backend.music.snapcast
+  type: backend
diff --git a/platypush/backend/music/spotify/manifest.yaml b/platypush/backend/music/spotify/manifest.yaml
new file mode 100644
index 00000000..8fd3f394
--- /dev/null
+++ b/platypush/backend/music/spotify/manifest.yaml
@@ -0,0 +1,21 @@
+manifest:
+  events:
+    platypush.message.event.music.MusicPauseEvent: if the playback state changed to
+      pause
+    platypush.message.event.music.MusicPlayEvent: if the playback state changed to
+      play
+    platypush.message.event.music.MusicStopEvent: if the playback state changed to
+      stop
+    platypush.message.event.music.NewPlayingTrackEvent: if a new track is being played
+    platypush.message.event.music.VolumeChangeEvent: if the volume changes
+  install:
+    apt:
+      - sudo
+      - cargo
+    pacman:
+      - sudo
+      - cargo
+    exec:
+      - sudo cargo install librespot
+  package: platypush.backend.music.spotify
+  type: backend
diff --git a/platypush/backend/nextcloud.py b/platypush/backend/nextcloud/__init__.py
similarity index 100%
rename from platypush/backend/nextcloud.py
rename to platypush/backend/nextcloud/__init__.py
diff --git a/platypush/backend/nextcloud/manifest.yaml b/platypush/backend/nextcloud/manifest.yaml
new file mode 100644
index 00000000..432a7a5b
--- /dev/null
+++ b/platypush/backend/nextcloud/manifest.yaml
@@ -0,0 +1,10 @@
+manifest:
+  events:
+    platypush.message.event.nextcloud.NextCloudActivityEvent: 'when new activity occurs
+      on the instance.The field ``activity_type`` identifies the activity type (e.g.
+      ``file_created``, ``file_deleted``,``file_changed``). Example in the case of
+      the creation of new files:'
+  install:
+    pip: []
+  package: platypush.backend.nextcloud
+  type: backend
diff --git a/platypush/backend/nfc.py b/platypush/backend/nfc/__init__.py
similarity index 100%
rename from platypush/backend/nfc.py
rename to platypush/backend/nfc/__init__.py
diff --git a/platypush/backend/nfc/manifest.yaml b/platypush/backend/nfc/manifest.yaml
new file mode 100644
index 00000000..90f8ef5b
--- /dev/null
+++ b/platypush/backend/nfc/manifest.yaml
@@ -0,0 +1,13 @@
+manifest:
+  events:
+    platypush.message.event.nfc.NFCDeviceConnectedEvent: when an NFC reader/writer
+      is connected
+    platypush.message.event.nfc.NFCDeviceDisconnectedEvent: when an NFC reader/writer
+      is disconnected
+    platypush.message.event.nfc.NFCTagDetectedEvent: when an NFC tag is detected
+    platypush.message.event.nfc.NFCTagRemovedEvent: when an NFC tag is removed
+  install:
+    pip:
+    - ndef
+  package: platypush.backend.nfc
+  type: backend
diff --git a/platypush/backend/nodered/__init__.py b/platypush/backend/nodered/__init__.py
index 9c225965..b8b4bedf 100644
--- a/platypush/backend/nodered/__init__.py
+++ b/platypush/backend/nodered/__init__.py
@@ -17,6 +17,7 @@ class NoderedBackend(Backend):
     Requires:
 
         * **pynodered** (``pip install pynodered``)
+
     """
 
     def __init__(self, port: int = 5051, *args, **kwargs):
diff --git a/platypush/backend/nodered/manifest.yaml b/platypush/backend/nodered/manifest.yaml
new file mode 100644
index 00000000..d2d413e8
--- /dev/null
+++ b/platypush/backend/nodered/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pynodered
+  package: platypush.backend.nodered
+  type: backend
diff --git a/platypush/backend/ping.py b/platypush/backend/ping/__init__.py
similarity index 100%
rename from platypush/backend/ping.py
rename to platypush/backend/ping/__init__.py
diff --git a/platypush/backend/ping/manifest.yaml b/platypush/backend/ping/manifest.yaml
new file mode 100644
index 00000000..6c59f922
--- /dev/null
+++ b/platypush/backend/ping/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.ping.HostDownEvent: if a host stops responding ping requests
+    platypush.message.event.ping.HostUpEvent: if a host starts responding ping requests
+  install:
+    pip: []
+  package: platypush.backend.ping
+  type: backend
diff --git a/platypush/backend/pushbullet/__init__.py b/platypush/backend/pushbullet/__init__.py
index f1d24941..7d0b21b8 100644
--- a/platypush/backend/pushbullet/__init__.py
+++ b/platypush/backend/pushbullet/__init__.py
@@ -21,8 +21,8 @@ class PushbulletBackend(Backend):
 
     Requires:
 
-        * **requests** (``pip install requests``)
-        * **pushbullet.py** (``pip install git+https://github.com/rbrcsk/pushbullet.py``)
+        * **pushbullet.py** (``pip install git+https://github.com/pushbullet.py/pushbullet.py``)
+
     """
 
     def __init__(self, token: str, device: str = 'Platypush', proxy_host: Optional[str] = None,
@@ -52,7 +52,7 @@ class PushbulletBackend(Backend):
         try:
             self.device = self.pb.get_device(self.device_name)
         except Exception as e:
-            self.logger.info('Device {} does not exist: {}. Creating it'.format(self.device_name, str(e)))
+            self.logger.info(f'Device {self.device_name} does not exist: {e}. Creating it')
             self.device = self.pb.new_device(self.device_name)
 
         self.pb_device_id = self.get_device_id()
@@ -91,17 +91,15 @@ class PushbulletBackend(Backend):
 
                 if 'body' not in push:
                     return
-                self.logger.debug('Received push: {}'.format(push))
+                self.logger.debug(f'Received push: {push}')
 
                 body = push['body']
                 try:
                     body = json.loads(body)
                     self.on_message(body)
                 except Exception as e:
-                    self.logger.debug(('Unexpected message received on the ' +
-                                       'Pushbullet backend: {}. Message: {}')
-                                      .format(str(e), body))
-
+                    self.logger.debug('Unexpected message received on the ' +
+                                      f'Pushbullet backend: {e}. Message: {body}')
             except Exception as e:
                 self.logger.exception(e)
                 return
@@ -116,9 +114,7 @@ class PushbulletBackend(Backend):
             device = self.pb.new_device(self.device_name, model='Platypush virtual device',
                                         manufacturer='platypush', icon='system')
 
-            self.logger.info('Created Pushbullet device {}'.format(
-                self.device_name))
-
+            self.logger.info(f'Created Pushbullet device {self.device_name}')
             return device.device_iden
 
     def close(self):
@@ -133,27 +129,33 @@ class PushbulletBackend(Backend):
         self.logger.info('Pushbullet backend terminated')
 
     def on_close(self, err=None):
-        self.listener = None
-        raise RuntimeError(err or 'Connection closed')
+        def callback(*_):
+            self.listener = None
+            raise RuntimeError(err or 'Connection closed')
+
+        return callback
 
     def on_open(self):
-        self.logger.info('Pushbullet service connected')
+        def callback(*_):
+            self.logger.info('Pushbullet service connected')
+
+        return callback
 
     def run_listener(self):
         from .listener import Listener
 
-        self.logger.info('Initializing Pushbullet backend - device_id: {}'.format(self.device_name))
-        self.listener = Listener(account=self.pb, on_push=self.on_push(),
-                                 on_open=self.on_open,
-                                 on_close=self.on_close,
-                                 on_error=self.on_close,
+        self.logger.info(f'Initializing Pushbullet backend - device_id: {self.device_name}')
+        self.listener = Listener(account=self.pb,
+                                 on_push=self.on_push(),
+                                 on_open=self.on_open(),
+                                 on_close=self.on_close(),
+                                 on_error=self.on_close(),
                                  http_proxy_host=self.proxy_host,
                                  http_proxy_port=self.proxy_port)
 
         self.listener.run_forever()
 
     def run(self):
-        # noinspection PyPackageRequirements
         super().run()
         initialized = False
 
@@ -163,7 +165,7 @@ class PushbulletBackend(Backend):
                 initialized = True
             except Exception as e:
                 self.logger.exception(e)
-                self.logger.error('Pushbullet initialization error: {}'.format(str(e)))
+                self.logger.error(f'Pushbullet initialization error: {e}')
                 time.sleep(10)
 
         while not self.should_stop():
@@ -175,5 +177,4 @@ class PushbulletBackend(Backend):
                 self.logger.info('Retrying connection')
 
 
-
 # vim:sw=4:ts=4:et:
diff --git a/platypush/backend/pushbullet/manifest.yaml b/platypush/backend/pushbullet/manifest.yaml
new file mode 100644
index 00000000..27f5a0f2
--- /dev/null
+++ b/platypush/backend/pushbullet/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.pushbullet.PushbulletEvent: if a new push is received
+  install:
+    pip:
+    - git+https://github.com/rbrcsk/pushbullet.py
+  package: platypush.backend.pushbullet
+  type: backend
diff --git a/platypush/backend/redis.py b/platypush/backend/redis/__init__.py
similarity index 97%
rename from platypush/backend/redis.py
rename to platypush/backend/redis/__init__.py
index 45d2a622..d0b1e7c5 100644
--- a/platypush/backend/redis.py
+++ b/platypush/backend/redis/__init__.py
@@ -14,11 +14,6 @@ class RedisBackend(Backend):
     ``platypush_bus_mq``) and posts them to the application bus.  Very
     useful when you have plugin whose code is executed in another process
     and can't post events or requests to the application bus.
-
-    Requires:
-
-        * **redis** (``pip install redis``)
-
     """
 
     def __init__(self, queue='platypush_bus_mq', redis_args=None, *args, **kwargs):
diff --git a/platypush/backend/redis/manifest.yaml b/platypush/backend/redis/manifest.yaml
new file mode 100644
index 00000000..dbf975b3
--- /dev/null
+++ b/platypush/backend/redis/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.backend.redis
+  type: backend
diff --git a/platypush/backend/scard/__init__.py b/platypush/backend/scard/__init__.py
index e1bec4fa..532539cf 100644
--- a/platypush/backend/scard/__init__.py
+++ b/platypush/backend/scard/__init__.py
@@ -1,5 +1,3 @@
-import json
-
 from platypush.backend import Backend
 from platypush.message.event.scard import SmartCardDetectedEvent, SmartCardRemovedEvent
 
@@ -41,10 +39,15 @@ class ScardBackend(Backend):
                                    "supported types: string, list".format(
                                        atr, type(atr)))
 
-            self.cardtype = ATRCardType( *[toBytes(atr) for atr in self.ATRs] )
+            self.cardtype = ATRCardType(*[self._to_bytes(atr) for atr in self.ATRs])
         else:
             self.cardtype = AnyCardType()
 
+    @staticmethod
+    def _to_bytes(data) -> bytes:
+        if isinstance(data, str):
+            data = data.encode()
+        return data
 
     def run(self):
         from smartcard.CardRequest import CardRequest
@@ -54,7 +57,7 @@ class ScardBackend(Backend):
         super().run()
 
         self.logger.info('Initialized smart card reader backend - ATR filter: {}'.
-                     format(self.ATRs))
+                         format(self.ATRs))
 
         prev_atr = None
         reader = None
@@ -70,7 +73,7 @@ class ScardBackend(Backend):
 
                 if atr != prev_atr:
                     self.logger.info('Smart card detected on reader {}, ATR: {}'.
-                                format(reader, atr))
+                                     format(reader, atr))
 
                     self.bus.post(SmartCardDetectedEvent(atr=atr, reader=reader))
                     prev_atr = atr
@@ -82,6 +85,4 @@ class ScardBackend(Backend):
 
                 prev_atr = None
 
-
 # vim:sw=4:ts=4:et:
-
diff --git a/platypush/backend/scard/manifest.yaml b/platypush/backend/scard/manifest.yaml
new file mode 100644
index 00000000..3181627f
--- /dev/null
+++ b/platypush/backend/scard/manifest.yaml
@@ -0,0 +1,9 @@
+manifest:
+  events:
+    platypush.message.event.scard.SmartCardDetectedEvent: when a smart card is detected
+    platypush.message.event.scard.SmartCardRemovedEvent: when a smart card is removed
+  install:
+    pip:
+    - pyscard
+  package: platypush.backend.scard
+  type: backend
diff --git a/platypush/backend/sensor/__init__.py b/platypush/backend/sensor/__init__.py
index a7d1a08b..0cf5beb2 100644
--- a/platypush/backend/sensor/__init__.py
+++ b/platypush/backend/sensor/__init__.py
@@ -17,6 +17,7 @@ class SensorBackend(Backend):
             gone above a configured threshold
         * :class:`platypush.message.event.sensor.SensorDataBelowThresholdEvent` if the measurements of a sensor have
             gone below a configured threshold
+
     """
 
     default_tolerance = 1e-7
diff --git a/platypush/backend/sensor/accelerometer.py b/platypush/backend/sensor/accelerometer.py
deleted file mode 100644
index 55125d5c..00000000
--- a/platypush/backend/sensor/accelerometer.py
+++ /dev/null
@@ -1,18 +0,0 @@
-from platypush.backend.sensor import SensorBackend
-
-
-class SensorAccelerometerBackend(SensorBackend):
-    """
-    Backend to poll position information from an accelerometer sensor.
-
-    Requires:
-
-        * ``Adafruit_Python_GPIO`` (``pip install Adafruit_Python_GPIO``)
-        * The :mod:`platypush.plugins.gpio.sensor.accelerometer` plugin configured
-    """
-
-    def __init__(self, **kwargs):
-        super().__init__(plugin='gpio.sensor.accelerometer', **kwargs)
-
-
-# vim:sw=4:ts=4:et:
diff --git a/platypush/backend/sensor/accelerometer/__init__.py b/platypush/backend/sensor/accelerometer/__init__.py
new file mode 100644
index 00000000..5bae1a73
--- /dev/null
+++ b/platypush/backend/sensor/accelerometer/__init__.py
@@ -0,0 +1,27 @@
+from platypush.backend.sensor import SensorBackend
+
+
+class SensorAccelerometerBackend(SensorBackend):
+    """
+    Backend to poll position information from an accelerometer sensor.
+
+    Requires:
+
+        * ``Adafruit-GPIO`` (``pip install Adafruit-GPIO``)
+        * The :mod:`platypush.plugins.gpio.sensor.accelerometer` plugin configured
+
+    Triggers:
+
+        * :class:`platypush.message.event.sensor.SensorDataChangeEvent` if the measurements of a sensor have changed
+        * :class:`platypush.message.event.sensor.SensorDataAboveThresholdEvent` if the measurements of a sensor have
+            gone above a configured threshold
+        * :class:`platypush.message.event.sensor.SensorDataBelowThresholdEvent` if the measurements of a sensor have
+            gone below a configured threshold
+
+    """
+
+    def __init__(self, **kwargs):
+        super().__init__(plugin='gpio.sensor.accelerometer', **kwargs)
+
+
+# vim:sw=4:ts=4:et:
diff --git a/platypush/backend/sensor/accelerometer/manifest.yaml b/platypush/backend/sensor/accelerometer/manifest.yaml
new file mode 100644
index 00000000..ea1aace2
--- /dev/null
+++ b/platypush/backend/sensor/accelerometer/manifest.yaml
@@ -0,0 +1,13 @@
+manifest:
+  events:
+    platypush.message.event.sensor.SensorDataAboveThresholdEvent: if the measurements
+      of a sensor havegone above a configured threshold
+    platypush.message.event.sensor.SensorDataBelowThresholdEvent: if the measurements
+      of a sensor havegone below a configured threshold
+    platypush.message.event.sensor.SensorDataChangeEvent: if the measurements of a
+      sensor have changed
+  install:
+    pip:
+    - Adafruit-GPIO
+  package: platypush.backend.sensor.accelerometer
+  type: backend
diff --git a/platypush/backend/sensor/arduino.py b/platypush/backend/sensor/arduino.py
deleted file mode 100644
index a89d12e4..00000000
--- a/platypush/backend/sensor/arduino.py
+++ /dev/null
@@ -1,18 +0,0 @@
-from platypush.backend.sensor import SensorBackend
-
-
-class SensorArduinoBackend(SensorBackend):
-    """
-    This backend listens for new events from an Arduino with a Firmata-compatible firmware.
-
-    Requires:
-
-        * The :class:`platypush.plugins.arduino.ArduinoPlugin` plugin configured.
-
-    """
-
-    def __init__(self, **kwargs):
-        super().__init__(plugin='arduino', **kwargs)
-
-
-# vim:sw=4:ts=4:et:
diff --git a/platypush/backend/sensor/arduino/__init__.py b/platypush/backend/sensor/arduino/__init__.py
new file mode 100644
index 00000000..ff37ebb6
--- /dev/null
+++ b/platypush/backend/sensor/arduino/__init__.py
@@ -0,0 +1,26 @@
+from platypush.backend.sensor import SensorBackend
+
+
+class SensorArduinoBackend(SensorBackend):
+    """
+    This backend listens for new events from an Arduino with a Firmata-compatible firmware.
+
+    Requires:
+
+        * The :class:`platypush.plugins.arduino.ArduinoPlugin` plugin configured.
+
+    Triggers:
+
+        * :class:`platypush.message.event.sensor.SensorDataChangeEvent` if the measurements of a sensor have changed
+        * :class:`platypush.message.event.sensor.SensorDataAboveThresholdEvent` if the measurements of a sensor have
+            gone above a configured threshold
+        * :class:`platypush.message.event.sensor.SensorDataBelowThresholdEvent` if the measurements of a sensor have
+            gone below a configured threshold
+
+    """
+
+    def __init__(self, **kwargs):
+        super().__init__(plugin='arduino', **kwargs)
+
+
+# vim:sw=4:ts=4:et:
diff --git a/platypush/backend/sensor/arduino/manifest.yaml b/platypush/backend/sensor/arduino/manifest.yaml
new file mode 100644
index 00000000..539966d7
--- /dev/null
+++ b/platypush/backend/sensor/arduino/manifest.yaml
@@ -0,0 +1,12 @@
+manifest:
+  events:
+    platypush.message.event.sensor.SensorDataAboveThresholdEvent: if the measurements
+      of a sensor havegone above a configured threshold
+    platypush.message.event.sensor.SensorDataBelowThresholdEvent: if the measurements
+      of a sensor havegone below a configured threshold
+    platypush.message.event.sensor.SensorDataChangeEvent: if the measurements of a
+      sensor have changed
+  install:
+    pip: []
+  package: platypush.backend.sensor.arduino
+  type: backend
diff --git a/platypush/backend/sensor/battery.py b/platypush/backend/sensor/battery/__init__.py
similarity index 65%
rename from platypush/backend/sensor/battery.py
rename to platypush/backend/sensor/battery/__init__.py
index 28226b90..11e4ff0b 100644
--- a/platypush/backend/sensor/battery.py
+++ b/platypush/backend/sensor/battery/__init__.py
@@ -13,6 +13,15 @@ class SensorBatteryBackend(SensorBackend):
     Requires:
 
         - **psutil** (``pip install psutil``) for CPU load and stats.
+
+    Triggers:
+
+        * :class:`platypush.message.event.sensor.SensorDataChangeEvent` if the measurements of a sensor have changed
+        * :class:`platypush.message.event.sensor.SensorDataAboveThresholdEvent` if the measurements of a sensor have
+            gone above a configured threshold
+        * :class:`platypush.message.event.sensor.SensorDataBelowThresholdEvent` if the measurements of a sensor have
+            gone below a configured threshold
+
     """
 
     def __init__(self, **kwargs):
diff --git a/platypush/backend/sensor/battery/manifest.yaml b/platypush/backend/sensor/battery/manifest.yaml
new file mode 100644
index 00000000..d3f05533
--- /dev/null
+++ b/platypush/backend/sensor/battery/manifest.yaml
@@ -0,0 +1,13 @@
+manifest:
+  events:
+    platypush.message.event.sensor.SensorDataAboveThresholdEvent: if the measurements
+      of a sensor havegone above a configured threshold
+    platypush.message.event.sensor.SensorDataBelowThresholdEvent: if the measurements
+      of a sensor havegone below a configured threshold
+    platypush.message.event.sensor.SensorDataChangeEvent: if the measurements of a
+      sensor have changed
+  install:
+    pip:
+    - psutil
+  package: platypush.backend.sensor.battery
+  type: backend
diff --git a/platypush/backend/sensor/bme280.py b/platypush/backend/sensor/bme280/__init__.py
similarity index 65%
rename from platypush/backend/sensor/bme280.py
rename to platypush/backend/sensor/bme280/__init__.py
index aa171f62..3690424f 100644
--- a/platypush/backend/sensor/bme280.py
+++ b/platypush/backend/sensor/bme280/__init__.py
@@ -9,6 +9,15 @@ class SensorBme280Backend(SensorBackend):
     Requires:
 
         * ``pimoroni-bme280`` (``pip install pimoroni-bme280``)
+
+    Triggers:
+
+        * :class:`platypush.message.event.sensor.SensorDataChangeEvent` if the measurements of a sensor have changed
+        * :class:`platypush.message.event.sensor.SensorDataAboveThresholdEvent` if the measurements of a sensor have
+            gone above a configured threshold
+        * :class:`platypush.message.event.sensor.SensorDataBelowThresholdEvent` if the measurements of a sensor have
+            gone below a configured threshold
+
     """
 
     def __init__(self, temperature=True, pressure=True, humidity=True, **kwargs):
diff --git a/platypush/backend/sensor/bme280/manifest.yaml b/platypush/backend/sensor/bme280/manifest.yaml
new file mode 100644
index 00000000..6b2981ee
--- /dev/null
+++ b/platypush/backend/sensor/bme280/manifest.yaml
@@ -0,0 +1,13 @@
+manifest:
+  events:
+    platypush.message.event.sensor.SensorDataAboveThresholdEvent: if the measurements
+      of a sensor havegone above a configured threshold
+    platypush.message.event.sensor.SensorDataBelowThresholdEvent: if the measurements
+      of a sensor havegone below a configured threshold
+    platypush.message.event.sensor.SensorDataChangeEvent: if the measurements of a
+      sensor have changed
+  install:
+    pip:
+    - pimoroni-bme280
+  package: platypush.backend.sensor.bme280
+  type: backend
diff --git a/platypush/backend/sensor/dht.py b/platypush/backend/sensor/dht/__init__.py
similarity index 64%
rename from platypush/backend/sensor/dht.py
rename to platypush/backend/sensor/dht/__init__.py
index 55210052..3cc93a9d 100644
--- a/platypush/backend/sensor/dht.py
+++ b/platypush/backend/sensor/dht/__init__.py
@@ -10,6 +10,14 @@ class SensorDhtBackend(SensorBackend):
         * ``Adafruit_Python_DHT`` (``pip install git+https://github.com/adafruit/Adafruit_Python_DHT.git``)
         * The ``gpio.sensor.dht`` plugin configured and enabled.
 
+    Triggers:
+
+        * :class:`platypush.message.event.sensor.SensorDataChangeEvent` if the measurements of a sensor have changed
+        * :class:`platypush.message.event.sensor.SensorDataAboveThresholdEvent` if the measurements of a sensor have
+            gone above a configured threshold
+        * :class:`platypush.message.event.sensor.SensorDataBelowThresholdEvent` if the measurements of a sensor have
+            gone below a configured threshold
+
     """
 
     def __init__(self, temperature: bool = True, humidity: bool = True, **kwargs):
diff --git a/platypush/backend/sensor/dht/manifest.yaml b/platypush/backend/sensor/dht/manifest.yaml
new file mode 100644
index 00000000..f20d92f2
--- /dev/null
+++ b/platypush/backend/sensor/dht/manifest.yaml
@@ -0,0 +1,13 @@
+manifest:
+  events:
+    platypush.message.event.sensor.SensorDataAboveThresholdEvent: if the measurements
+      of a sensor havegone above a configured threshold
+    platypush.message.event.sensor.SensorDataBelowThresholdEvent: if the measurements
+      of a sensor havegone below a configured threshold
+    platypush.message.event.sensor.SensorDataChangeEvent: if the measurements of a
+      sensor have changed
+  install:
+    pip:
+    - Adafruit_Python_DHT
+  package: platypush.backend.sensor.dht
+  type: backend
diff --git a/platypush/backend/sensor/distance/__init__.py b/platypush/backend/sensor/distance/__init__.py
index 88cfb1a9..3c717183 100644
--- a/platypush/backend/sensor/distance/__init__.py
+++ b/platypush/backend/sensor/distance/__init__.py
@@ -10,6 +10,15 @@ class SensorDistanceBackend(SensorBackend):
 
         * ``RPi.GPIO`` (``pip install RPi.GPIO``)
         * The :mod:`platypush.plugins.gpio.sensor.distance` plugin configured
+
+    Triggers:
+
+        * :class:`platypush.message.event.sensor.SensorDataChangeEvent` if the measurements of a sensor have changed
+        * :class:`platypush.message.event.sensor.SensorDataAboveThresholdEvent` if the measurements of a sensor have
+            gone above a configured threshold
+        * :class:`platypush.message.event.sensor.SensorDataBelowThresholdEvent` if the measurements of a sensor have
+            gone below a configured threshold
+
     """
 
     def get_measurement(self):
diff --git a/platypush/backend/sensor/distance/manifest.yaml b/platypush/backend/sensor/distance/manifest.yaml
new file mode 100644
index 00000000..8a8cce48
--- /dev/null
+++ b/platypush/backend/sensor/distance/manifest.yaml
@@ -0,0 +1,13 @@
+manifest:
+  events:
+    platypush.message.event.sensor.SensorDataAboveThresholdEvent: if the measurements
+      of a sensor havegone above a configured threshold
+    platypush.message.event.sensor.SensorDataBelowThresholdEvent: if the measurements
+      of a sensor havegone below a configured threshold
+    platypush.message.event.sensor.SensorDataChangeEvent: if the measurements of a
+      sensor have changed
+  install:
+    pip:
+    - RPi.GPIO
+  package: platypush.backend.sensor.distance
+  type: backend
diff --git a/platypush/backend/sensor/distance/vl53l1x.py b/platypush/backend/sensor/distance/vl53l1x/__init__.py
similarity index 66%
rename from platypush/backend/sensor/distance/vl53l1x.py
rename to platypush/backend/sensor/distance/vl53l1x/__init__.py
index cd4f7875..45408f2a 100644
--- a/platypush/backend/sensor/distance/vl53l1x.py
+++ b/platypush/backend/sensor/distance/vl53l1x/__init__.py
@@ -10,6 +10,15 @@ class SensorDistanceVl53L1XBackend(SensorBackend):
 
         * ``smbus2`` (``pip install smbus2``)
         * ``vl53l1x`` (``pip install vl53l1x``)
+
+    Triggers:
+
+        * :class:`platypush.message.event.sensor.SensorDataChangeEvent` if the measurements of a sensor have changed
+        * :class:`platypush.message.event.sensor.SensorDataAboveThresholdEvent` if the measurements of a sensor have
+            gone above a configured threshold
+        * :class:`platypush.message.event.sensor.SensorDataBelowThresholdEvent` if the measurements of a sensor have
+            gone below a configured threshold
+
     """
 
     def __init__(self, short=True, medium=False, long=False, **kwargs):
diff --git a/platypush/backend/sensor/distance/vl53l1x/manifest.yaml b/platypush/backend/sensor/distance/vl53l1x/manifest.yaml
new file mode 100644
index 00000000..8150eec9
--- /dev/null
+++ b/platypush/backend/sensor/distance/vl53l1x/manifest.yaml
@@ -0,0 +1,14 @@
+manifest:
+  events:
+    platypush.message.event.sensor.SensorDataAboveThresholdEvent: if the measurements
+      of a sensor havegone above a configured threshold
+    platypush.message.event.sensor.SensorDataBelowThresholdEvent: if the measurements
+      of a sensor havegone below a configured threshold
+    platypush.message.event.sensor.SensorDataChangeEvent: if the measurements of a
+      sensor have changed
+  install:
+    pip:
+    - smbus2
+    - vl53l1x
+  package: platypush.backend.sensor.distance.vl53l1x
+  type: backend
diff --git a/platypush/backend/sensor/envirophat.py b/platypush/backend/sensor/envirophat/__init__.py
similarity index 76%
rename from platypush/backend/sensor/envirophat.py
rename to platypush/backend/sensor/envirophat/__init__.py
index 764c91fb..fc98db7d 100644
--- a/platypush/backend/sensor/envirophat.py
+++ b/platypush/backend/sensor/envirophat/__init__.py
@@ -9,6 +9,15 @@ class SensorEnvirophatBackend(SensorBackend):
     Requires:
 
         * ``envirophat`` (``pip install envirophat``)
+
+    Triggers:
+
+        * :class:`platypush.message.event.sensor.SensorDataChangeEvent` if the measurements of a sensor have changed
+        * :class:`platypush.message.event.sensor.SensorDataAboveThresholdEvent` if the measurements of a sensor have
+            gone above a configured threshold
+        * :class:`platypush.message.event.sensor.SensorDataBelowThresholdEvent` if the measurements of a sensor have
+            gone below a configured threshold
+
     """
 
     def __init__(self, temperature=True, pressure=True, altitude=True, luminosity=True,
diff --git a/platypush/backend/sensor/envirophat/manifest.yaml b/platypush/backend/sensor/envirophat/manifest.yaml
new file mode 100644
index 00000000..22a4ec22
--- /dev/null
+++ b/platypush/backend/sensor/envirophat/manifest.yaml
@@ -0,0 +1,13 @@
+manifest:
+  events:
+    platypush.message.event.sensor.SensorDataAboveThresholdEvent: if the measurements
+      of a sensor havegone above a configured threshold
+    platypush.message.event.sensor.SensorDataBelowThresholdEvent: if the measurements
+      of a sensor havegone below a configured threshold
+    platypush.message.event.sensor.SensorDataChangeEvent: if the measurements of a
+      sensor have changed
+  install:
+    pip:
+    - envirophat
+  package: platypush.backend.sensor.envirophat
+  type: backend
diff --git a/platypush/backend/sensor/ir/zeroborg/manifest.yaml b/platypush/backend/sensor/ir/zeroborg/manifest.yaml
new file mode 100644
index 00000000..0fc02bdd
--- /dev/null
+++ b/platypush/backend/sensor/ir/zeroborg/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.sensor.ir.IrKeyDownEvent: when a key is pressed
+    platypush.message.event.sensor.ir.IrKeyUpEvent: when a key is released
+  install:
+    pip: []
+  package: platypush.backend.sensor.ir.zeroborg
+  type: backend
diff --git a/platypush/backend/sensor/leap.py b/platypush/backend/sensor/leap/__init__.py
similarity index 100%
rename from platypush/backend/sensor/leap.py
rename to platypush/backend/sensor/leap/__init__.py
diff --git a/platypush/backend/sensor/leap/manifest.yaml b/platypush/backend/sensor/leap/manifest.yaml
new file mode 100644
index 00000000..1dfa5198
--- /dev/null
+++ b/platypush/backend/sensor/leap/manifest.yaml
@@ -0,0 +1,15 @@
+manifest:
+  events:
+    platypush.message.event.sensor.leap.LeapConnectEvent: when a Leap Motion device
+      is connected
+    platypush.message.event.sensor.leap.LeapDisconnectEvent: when a Leap Motion device
+      disconnects
+    platypush.message.event.sensor.leap.LeapFrameEvent: when a new frame is received
+    platypush.message.event.sensor.leap.LeapFrameStartEvent: when a new sequence of
+      frame starts
+    platypush.message.event.sensor.leap.LeapFrameStopEvent: when a sequence of frame
+      stops
+  install:
+    pip: []
+  package: platypush.backend.sensor.leap
+  type: backend
diff --git a/platypush/backend/sensor/ltr559.py b/platypush/backend/sensor/ltr559/__init__.py
similarity index 60%
rename from platypush/backend/sensor/ltr559.py
rename to platypush/backend/sensor/ltr559/__init__.py
index 0952bb94..c5ae8b35 100644
--- a/platypush/backend/sensor/ltr559.py
+++ b/platypush/backend/sensor/ltr559/__init__.py
@@ -9,6 +9,15 @@ class SensorLtr559Backend(SensorBackend):
     Requires:
 
         * ``ltr559`` (``pip install ltr559``)
+
+    Triggers:
+
+        * :class:`platypush.message.event.sensor.SensorDataChangeEvent` if the measurements of a sensor have changed
+        * :class:`platypush.message.event.sensor.SensorDataAboveThresholdEvent` if the measurements of a sensor have
+            gone above a configured threshold
+        * :class:`platypush.message.event.sensor.SensorDataBelowThresholdEvent` if the measurements of a sensor have
+            gone below a configured threshold
+
     """
 
     def __init__(self, light=True, proximity=True, **kwargs):
diff --git a/platypush/backend/sensor/ltr559/manifest.yaml b/platypush/backend/sensor/ltr559/manifest.yaml
new file mode 100644
index 00000000..0cd07a51
--- /dev/null
+++ b/platypush/backend/sensor/ltr559/manifest.yaml
@@ -0,0 +1,13 @@
+manifest:
+  events:
+    platypush.message.event.sensor.SensorDataAboveThresholdEvent: if the measurements
+      of a sensor havegone above a configured threshold
+    platypush.message.event.sensor.SensorDataBelowThresholdEvent: if the measurements
+      of a sensor havegone below a configured threshold
+    platypush.message.event.sensor.SensorDataChangeEvent: if the measurements of a
+      sensor have changed
+  install:
+    pip:
+    - ltr559
+  package: platypush.backend.sensor.ltr559
+  type: backend
diff --git a/platypush/backend/sensor/mcp3008.py b/platypush/backend/sensor/mcp3008/__init__.py
similarity index 54%
rename from platypush/backend/sensor/mcp3008.py
rename to platypush/backend/sensor/mcp3008/__init__.py
index 2a0327e3..5791926e 100644
--- a/platypush/backend/sensor/mcp3008.py
+++ b/platypush/backend/sensor/mcp3008/__init__.py
@@ -10,6 +10,15 @@ class SensorMcp3008Backend(SensorBackend):
 
         * ``adafruit-mcp3008`` (``pip install adafruit-mcp3008``)
         * The :mod:`platypush.plugins.gpio.sensor.mcp3008` plugin configured
+
+    Triggers:
+
+        * :class:`platypush.message.event.sensor.SensorDataChangeEvent` if the measurements of a sensor have changed
+        * :class:`platypush.message.event.sensor.SensorDataAboveThresholdEvent` if the measurements of a sensor have
+            gone above a configured threshold
+        * :class:`platypush.message.event.sensor.SensorDataBelowThresholdEvent` if the measurements of a sensor have
+            gone below a configured threshold
+
     """
 
     def __init__(self, **kwargs):
diff --git a/platypush/backend/sensor/mcp3008/manifest.yaml b/platypush/backend/sensor/mcp3008/manifest.yaml
new file mode 100644
index 00000000..095fb298
--- /dev/null
+++ b/platypush/backend/sensor/mcp3008/manifest.yaml
@@ -0,0 +1,13 @@
+manifest:
+  events:
+    platypush.message.event.sensor.SensorDataAboveThresholdEvent: if the measurements
+      of a sensor havegone above a configured threshold
+    platypush.message.event.sensor.SensorDataBelowThresholdEvent: if the measurements
+      of a sensor havegone below a configured threshold
+    platypush.message.event.sensor.SensorDataChangeEvent: if the measurements of a
+      sensor have changed
+  install:
+    pip:
+    - adafruit-mcp3008
+  package: platypush.backend.sensor.mcp3008
+  type: backend
diff --git a/platypush/backend/sensor/motion/pmw3901/__init__.py b/platypush/backend/sensor/motion/pmw3901/__init__.py
new file mode 100644
index 00000000..fc8aa0c0
--- /dev/null
+++ b/platypush/backend/sensor/motion/pmw3901/__init__.py
@@ -0,0 +1,33 @@
+from platypush.backend.sensor import SensorBackend
+
+
+class SensorMotionPmw3901Backend(SensorBackend):
+    """
+    Backend to poll an `PMW3901 <https://github.com/pimoroni/pmw3901-python>`_
+    optical flow and motion sensor
+
+    Requires:
+
+        * ``pmw3901`` (``pip install pmw3901``)
+
+    Triggers:
+
+        * :class:`platypush.message.event.sensor.SensorDataChangeEvent` if the measurements of a sensor have changed
+        * :class:`platypush.message.event.sensor.SensorDataAboveThresholdEvent` if the measurements of a sensor have
+            gone above a configured threshold
+        * :class:`platypush.message.event.sensor.SensorDataBelowThresholdEvent` if the measurements of a sensor have
+            gone below a configured threshold
+
+    """
+
+    _default_poll_seconds = 0.01
+
+    def __init__(self, **kwargs):
+        if 'poll_seconds' not in kwargs:
+            # noinspection PyTypeChecker
+            kwargs['poll_seconds'] = self._default_poll_seconds
+
+        super().__init__(plugin='gpio.sensor.motion.pmw3901', **kwargs)
+
+
+# vim:sw=4:ts=4:et:
diff --git a/platypush/backend/sensor/motion/pmw3901/manifest.yaml b/platypush/backend/sensor/motion/pmw3901/manifest.yaml
new file mode 100644
index 00000000..ad45445e
--- /dev/null
+++ b/platypush/backend/sensor/motion/pmw3901/manifest.yaml
@@ -0,0 +1,13 @@
+manifest:
+  events:
+    platypush.message.event.sensor.SensorDataAboveThresholdEvent: if the measurements
+      of a sensor havegone above a configured threshold
+    platypush.message.event.sensor.SensorDataBelowThresholdEvent: if the measurements
+      of a sensor havegone below a configured threshold
+    platypush.message.event.sensor.SensorDataChangeEvent: if the measurements of a
+      sensor have changed
+  install:
+    pip:
+    - pmw3901
+  package: platypush.backend.sensor.motion.pmw3901
+  type: backend
diff --git a/platypush/backend/sensor/motion/pwm3901.py b/platypush/backend/sensor/motion/pwm3901.py
deleted file mode 100644
index 6bb7c329..00000000
--- a/platypush/backend/sensor/motion/pwm3901.py
+++ /dev/null
@@ -1,24 +0,0 @@
-from platypush.backend.sensor import SensorBackend
-
-
-class SensorMotionPwm3901Backend(SensorBackend):
-    """
-    Backend to poll an `PWM3901 <https://github.com/pimoroni/pmw3901-python>`_
-    optical flow and motion sensor
-
-    Requires:
-
-        * ``pwm3901`` (``pip install pwm3901``)
-    """
-
-    _default_poll_seconds = 0.01
-
-    def __init__(self, **kwargs):
-        if 'poll_seconds' not in kwargs:
-            # noinspection PyTypeChecker
-            kwargs['poll_seconds'] = self._default_poll_seconds
-
-        super().__init__(plugin='gpio.sensor.motion.pwm3901', **kwargs)
-
-
-# vim:sw=4:ts=4:et:
diff --git a/platypush/backend/sensor/serial.py b/platypush/backend/sensor/serial.py
deleted file mode 100644
index 4d8fd480..00000000
--- a/platypush/backend/sensor/serial.py
+++ /dev/null
@@ -1,18 +0,0 @@
-from platypush.backend.sensor import SensorBackend
-
-
-class SensorSerialBackend(SensorBackend):
-    """
-    This backend listens for new events from sensors connected through a serial
-    interface (like Arduino) acting as a wrapper for the ``serial`` plugin.
-
-    Requires:
-
-        * The :mod:`platypush.plugins.serial` plugin configured
-    """
-
-    def __init__(self, **kwargs):
-        super().__init__(plugin='serial', **kwargs)
-
-
-# vim:sw=4:ts=4:et:
diff --git a/platypush/backend/sensor/serial/__init__.py b/platypush/backend/sensor/serial/__init__.py
new file mode 100644
index 00000000..f6d1b3b5
--- /dev/null
+++ b/platypush/backend/sensor/serial/__init__.py
@@ -0,0 +1,27 @@
+from platypush.backend.sensor import SensorBackend
+
+
+class SensorSerialBackend(SensorBackend):
+    """
+    This backend listens for new events from sensors connected through a serial
+    interface (like Arduino) acting as a wrapper for the ``serial`` plugin.
+
+    Requires:
+
+        * The :mod:`platypush.plugins.serial` plugin configured
+
+    Triggers:
+
+        * :class:`platypush.message.event.sensor.SensorDataChangeEvent` if the measurements of a sensor have changed
+        * :class:`platypush.message.event.sensor.SensorDataAboveThresholdEvent` if the measurements of a sensor have
+            gone above a configured threshold
+        * :class:`platypush.message.event.sensor.SensorDataBelowThresholdEvent` if the measurements of a sensor have
+            gone below a configured threshold
+
+    """
+
+    def __init__(self, **kwargs):
+        super().__init__(plugin='serial', **kwargs)
+
+
+# vim:sw=4:ts=4:et:
diff --git a/platypush/backend/sensor/serial/manifest.yaml b/platypush/backend/sensor/serial/manifest.yaml
new file mode 100644
index 00000000..f0d7abf4
--- /dev/null
+++ b/platypush/backend/sensor/serial/manifest.yaml
@@ -0,0 +1,12 @@
+manifest:
+  events:
+    platypush.message.event.sensor.SensorDataAboveThresholdEvent: if the measurements
+      of a sensor havegone above a configured threshold
+    platypush.message.event.sensor.SensorDataBelowThresholdEvent: if the measurements
+      of a sensor havegone below a configured threshold
+    platypush.message.event.sensor.SensorDataChangeEvent: if the measurements of a
+      sensor have changed
+  install:
+    pip: []
+  package: platypush.backend.sensor.serial
+  type: backend
diff --git a/platypush/backend/stt/deepspeech.py b/platypush/backend/stt/deepspeech/__init__.py
similarity index 100%
rename from platypush/backend/stt/deepspeech.py
rename to platypush/backend/stt/deepspeech/__init__.py
diff --git a/platypush/backend/stt/deepspeech/manifest.yaml b/platypush/backend/stt/deepspeech/manifest.yaml
new file mode 100644
index 00000000..2ac470b6
--- /dev/null
+++ b/platypush/backend/stt/deepspeech/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.backend.stt.deepspeech
+  type: backend
diff --git a/platypush/backend/stt/picovoice/hotword.py b/platypush/backend/stt/picovoice/hotword/__init__.py
similarity index 100%
rename from platypush/backend/stt/picovoice/hotword.py
rename to platypush/backend/stt/picovoice/hotword/__init__.py
diff --git a/platypush/backend/stt/picovoice/hotword/manifest.yaml b/platypush/backend/stt/picovoice/hotword/manifest.yaml
new file mode 100644
index 00000000..0527afca
--- /dev/null
+++ b/platypush/backend/stt/picovoice/hotword/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.backend.stt.picovoice.hotword
+  type: backend
diff --git a/platypush/backend/stt/picovoice/speech.py b/platypush/backend/stt/picovoice/speech/__init__.py
similarity index 100%
rename from platypush/backend/stt/picovoice/speech.py
rename to platypush/backend/stt/picovoice/speech/__init__.py
diff --git a/platypush/backend/stt/picovoice/speech/manifest.yaml b/platypush/backend/stt/picovoice/speech/manifest.yaml
new file mode 100644
index 00000000..fc68a467
--- /dev/null
+++ b/platypush/backend/stt/picovoice/speech/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.backend.stt.picovoice.speech
+  type: backend
diff --git a/platypush/backend/tcp.py b/platypush/backend/tcp/__init__.py
similarity index 100%
rename from platypush/backend/tcp.py
rename to platypush/backend/tcp/__init__.py
diff --git a/platypush/backend/tcp/manifest.yaml b/platypush/backend/tcp/manifest.yaml
new file mode 100644
index 00000000..af881fb2
--- /dev/null
+++ b/platypush/backend/tcp/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.backend.tcp
+  type: backend
diff --git a/platypush/backend/todoist.py b/platypush/backend/todoist/__init__.py
similarity index 98%
rename from platypush/backend/todoist.py
rename to platypush/backend/todoist/__init__.py
index ef8ec74b..1f1f4f12 100644
--- a/platypush/backend/todoist.py
+++ b/platypush/backend/todoist/__init__.py
@@ -16,7 +16,6 @@ class TodoistBackend(Backend):
     Requires:
 
         * **todoist-python** (``pip install todoist-python``)
-        * **websocket-client** (``pip install websocket-client``)
 
     Triggers:
 
diff --git a/platypush/backend/todoist/manifest.yaml b/platypush/backend/todoist/manifest.yaml
new file mode 100644
index 00000000..6f556d82
--- /dev/null
+++ b/platypush/backend/todoist/manifest.yaml
@@ -0,0 +1,16 @@
+manifest:
+  events:
+    platypush.message.event.todoist.CheckedItemEvent: when an item is checked.
+    platypush.message.event.todoist.ItemContentChangeEvent: when the content of an
+      item is changed.
+    platypush.message.event.todoist.ModifiedItemEvent: when an item is changed and
+      the changedoesn't fall into the categories above.
+    platypush.message.event.todoist.NewItemEvent: when a new item is created.
+    platypush.message.event.todoist.RemovedItemEvent: when an item is removed.
+    platypush.message.event.todoist.TodoistSyncRequiredEvent: when an update has occurred
+      that doesn'tfall into the categories above and a sync is required to get up-to-date.
+  install:
+    pip:
+    - todoist-python
+  package: platypush.backend.todoist
+  type: backend
diff --git a/platypush/backend/travisci.py b/platypush/backend/travisci/__init__.py
similarity index 100%
rename from platypush/backend/travisci.py
rename to platypush/backend/travisci/__init__.py
diff --git a/platypush/backend/travisci/manifest.yaml b/platypush/backend/travisci/manifest.yaml
new file mode 100644
index 00000000..eb7fe194
--- /dev/null
+++ b/platypush/backend/travisci/manifest.yaml
@@ -0,0 +1,10 @@
+manifest:
+  events:
+    platypush.message.event.travisci.TravisciBuildFailedEvent: when the build of a
+      project owned bythe user fails.
+    platypush.message.event.travisci.TravisciBuildPassedEvent: when the build of a
+      project owned bythe user passes.
+  install:
+    pip: []
+  package: platypush.backend.travisci
+  type: backend
diff --git a/platypush/backend/trello.py b/platypush/backend/trello/__init__.py
similarity index 98%
rename from platypush/backend/trello.py
rename to platypush/backend/trello/__init__.py
index 2f3b88f2..4f3fe2f7 100644
--- a/platypush/backend/trello.py
+++ b/platypush/backend/trello/__init__.py
@@ -28,7 +28,6 @@ class TrelloBackend(Backend):
 
     Requires:
 
-        * **websocket-client** (``pip install websocket-client``)
         * The :class:`platypush.plugins.trello.TrelloPlugin` configured.
 
     Triggers:
@@ -171,7 +170,6 @@ class TrelloBackend(Backend):
         return hndl
 
     def _on_open(self):
-        # noinspection PyUnusedLocal
         def hndl(*args):
             ws = args[0] if args else None
             self._connected.set()
diff --git a/platypush/backend/trello/manifest.yaml b/platypush/backend/trello/manifest.yaml
new file mode 100644
index 00000000..53553a90
--- /dev/null
+++ b/platypush/backend/trello/manifest.yaml
@@ -0,0 +1,10 @@
+manifest:
+  events:
+    platypush.message.event.ArchivedCardEvent: when a card is archived/closed.
+    platypush.message.event.MoveCardEvent: when a card is moved.
+    platypush.message.event.UnarchivedCardEvent: when a card is un-archived/opened.
+    platypush.message.event.trello.NewCardEvent: when a card is created.
+  install:
+    pip: []
+  package: platypush.backend.trello
+  type: backend
diff --git a/platypush/backend/weather/__init__.py b/platypush/backend/weather/__init__.py
index e2f5f863..81dbb992 100644
--- a/platypush/backend/weather/__init__.py
+++ b/platypush/backend/weather/__init__.py
@@ -1,4 +1,3 @@
-import abc
 import time
 
 from platypush.backend import Backend
@@ -6,7 +5,7 @@ from platypush.context import get_plugin
 from platypush.message.event.weather import NewWeatherConditionEvent
 
 
-class WeatherBackend(Backend, abc.ABC):
+class WeatherBackend(Backend):
     """
     Abstract class for weather update backends.
     """
diff --git a/platypush/backend/weather/buienradar.py b/platypush/backend/weather/buienradar/__init__.py
similarity index 100%
rename from platypush/backend/weather/buienradar.py
rename to platypush/backend/weather/buienradar/__init__.py
diff --git a/platypush/backend/weather/buienradar/manifest.yaml b/platypush/backend/weather/buienradar/manifest.yaml
new file mode 100644
index 00000000..12df0118
--- /dev/null
+++ b/platypush/backend/weather/buienradar/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.weather.NewWeatherConditionEvent: when there is a weather
+      condition update
+  install:
+    pip: []
+  package: platypush.backend.weather.buienradar
+  type: backend
diff --git a/platypush/backend/weather/darksky.py b/platypush/backend/weather/darksky/__init__.py
similarity index 100%
rename from platypush/backend/weather/darksky.py
rename to platypush/backend/weather/darksky/__init__.py
diff --git a/platypush/backend/weather/darksky/manifest.yaml b/platypush/backend/weather/darksky/manifest.yaml
new file mode 100644
index 00000000..0063b81b
--- /dev/null
+++ b/platypush/backend/weather/darksky/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.weather.NewWeatherConditionEvent: when there is a weather
+      condition update
+  install:
+    pip: []
+  package: platypush.backend.weather.darksky
+  type: backend
diff --git a/platypush/backend/weather/openweathermap.py b/platypush/backend/weather/openweathermap/__init__.py
similarity index 100%
rename from platypush/backend/weather/openweathermap.py
rename to platypush/backend/weather/openweathermap/__init__.py
diff --git a/platypush/backend/weather/openweathermap/manifest.yaml b/platypush/backend/weather/openweathermap/manifest.yaml
new file mode 100644
index 00000000..70b8cc87
--- /dev/null
+++ b/platypush/backend/weather/openweathermap/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.weather.NewWeatherConditionEvent: when there is a weather
+      condition update
+  install:
+    pip: []
+  package: platypush.backend.weather.openweathermap
+  type: backend
diff --git a/platypush/backend/websocket.py b/platypush/backend/websocket/__init__.py
similarity index 89%
rename from platypush/backend/websocket.py
rename to platypush/backend/websocket/__init__.py
index 38c60aac..fc5e2fac 100644
--- a/platypush/backend/websocket.py
+++ b/platypush/backend/websocket/__init__.py
@@ -1,6 +1,3 @@
-import asyncio
-import websockets
-
 from platypush.backend import Backend
 from platypush.context import get_plugin, get_or_create_event_loop
 from platypush.message import Message
@@ -12,10 +9,6 @@ from platypush.utils import get_ssl_server_context
 class WebsocketBackend(Backend):
     """
     Backend to communicate messages over a websocket medium.
-
-    Requires:
-
-        * **websockets** (``pip install websockets``)
     """
 
     # Websocket client message recv timeout in seconds
@@ -43,10 +36,12 @@ class WebsocketBackend(Backend):
         :param ssl_cafile: Path to the certificate authority file if required by the SSL configuration (default: None)
         :type ssl_cafile: str
 
-        :param ssl_capath: Path to the certificate authority directory if required by the SSL configuration (default: None)
+        :param ssl_capath: Path to the certificate authority directory if required by the SSL configuration
+            (default: None)
         :type ssl_capath: str
 
-        :param client_timeout: Timeout without any messages being received before closing a client connection. A zero timeout keeps the websocket open until an error occurs (default: 0, no timeout)
+        :param client_timeout: Timeout without any messages being received before closing a client connection.
+            A zero timeout keeps the websocket open until an error occurs (default: 0, no timeout)
         :type ping_timeout: int
         """
 
@@ -78,6 +73,11 @@ class WebsocketBackend(Backend):
 
     def notify_web_clients(self, event):
         """ Notify all the connected web clients (over websocket) of a new event """
+        try:
+            from websockets.exceptions import ConnectionClosed
+        except ImportError:
+            from websockets import ConnectionClosed
+
         async def send_event(websocket):
             try:
                 await websocket.send(str(event))
@@ -90,11 +90,19 @@ class WebsocketBackend(Backend):
         for ws in active_websockets:
             try:
                 loop.run_until_complete(send_event(ws))
-            except websockets.exceptions.ConnectionClosed:
+            except ConnectionClosed:
                 self.logger.info('Client connection lost')
                 self.active_websockets.remove(ws)
 
     def run(self):
+        import asyncio
+        import websockets
+
+        try:
+            from websockets.exceptions import ConnectionClosed
+        except ImportError:
+            from websockets import ConnectionClosed
+
         super().run()
         self.register_service(port=self.port, name='ws')
 
@@ -125,7 +133,7 @@ class WebsocketBackend(Backend):
 
                         await websocket.send(str(response))
 
-            except websockets.exceptions.ConnectionClosed as e:
+            except ConnectionClosed as e:
                 self.active_websockets.remove(websocket)
                 self.logger.debug('Websocket client {} closed connection'.
                                   format(websocket.remote_address[0]))
diff --git a/platypush/backend/websocket/manifest.yaml b/platypush/backend/websocket/manifest.yaml
new file mode 100644
index 00000000..dc60f459
--- /dev/null
+++ b/platypush/backend/websocket/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.backend.websocket
+  type: backend
diff --git a/platypush/backend/wiimote.py b/platypush/backend/wiimote/__init__.py
similarity index 81%
rename from platypush/backend/wiimote.py
rename to platypush/backend/wiimote/__init__.py
index 89e59663..cb339c7b 100644
--- a/platypush/backend/wiimote.py
+++ b/platypush/backend/wiimote/__init__.py
@@ -30,14 +30,14 @@ class WiimoteBackend(Backend):
     _last_btn_event_time = 0
     _bdaddr = None
 
-
     def __init__(self, bdaddr=_bdaddr, inactivity_timeout=_inactivity_timeout,
                  *args, **kwargs):
         """
         :param bdaddr: If set, connect to this specific Wiimote physical address (example: 00:11:22:33:44:55)
         :type bdaddr: str
 
-        :param inactivity_timeout: Number of seconds elapsed from the last Wiimote action before disconnecting the device (default: 300 seconds)
+        :param inactivity_timeout: Number of seconds elapsed from the last Wiimote action before disconnecting the
+            device (default: 300 seconds)
         :type inactivity_timeout: float
         """
 
@@ -45,7 +45,6 @@ class WiimoteBackend(Backend):
         self._bdaddr = bdaddr
         self._inactivity_timeout = inactivity_timeout
 
-
     def get_wiimote(self):
         import cwiid
 
@@ -72,35 +71,34 @@ class WiimoteBackend(Backend):
 
         # Get buttons
         all_btns = [attr for attr in dir(cwiid) if attr.startswith('BTN_')]
-        parsed_state['buttons'] = { btn: True for btn in all_btns
-                if state.get('buttons', 0) & getattr(cwiid, btn) != 0 }
+        parsed_state['buttons'] = {btn: True for btn in all_btns
+                                   if state.get('buttons', 0) & getattr(cwiid, btn) != 0}
 
         # Get LEDs
         all_leds = [attr for attr in dir(cwiid) if re.match('LED\d_ON', attr)]
-        parsed_state['led'] = { led[:4]: True for led in all_leds
-                if state.get('leds', 0) & getattr(cwiid, led) != 0 }
+        parsed_state['led'] = {led[:4]: True for led in all_leds
+                               if state.get('leds', 0) & getattr(cwiid, led) != 0}
 
         # Get errors
         all_errs = [attr for attr in dir(cwiid) if attr.startswith('ERROR_')]
-        parsed_state['error'] = { err: True for err in all_errs
-                if state.get('errs', 0) & getattr(cwiid, err) != 0 }
+        parsed_state['error'] = {err: True for err in all_errs
+                                 if state.get('errs', 0) & getattr(cwiid, err) != 0}
 
-        parsed_state['battery'] = round(state.get('battery', 0)/cwiid.BATTERY_MAX, 3)
+        parsed_state['battery'] = round(state.get('battery', 0) / cwiid.BATTERY_MAX, 3)
         parsed_state['rumble'] = bool(state.get('rumble', 0))
 
         if 'acc' in state:
-            parsed_state['acc'] = tuple(int(acc/5)*5 for acc in state['acc'])
+            parsed_state['acc'] = tuple(int(acc / 5) * 5 for acc in state['acc'])
 
         if 'motionplus' in state:
             parsed_state['motionplus'] = {
-                'angle_rate': tuple(int(angle/100) for angle
+                'angle_rate': tuple(int(angle / 100) for angle
                                     in state['motionplus']['angle_rate']),
                 'low_speed': state['motionplus']['low_speed'],
             }
 
         return parsed_state
 
-
     def close(self):
         if not self._wiimote:
             return
@@ -113,7 +111,6 @@ class WiimoteBackend(Backend):
         self._wiimote = None
         self.bus.post(WiimoteDisconnectionEvent())
 
-
     def run(self):
         super().run()
 
@@ -124,8 +121,8 @@ class WiimoteBackend(Backend):
         while not self.should_stop():
             try:
                 state = self.get_state()
-                changed_state = { k: state[k] for k in state.keys()
-                                 if state[k] != last_state.get(k) }
+                changed_state = {k: state[k] for k in state.keys()
+                                 if state[k] != last_state.get(k)}
 
                 if changed_state:
                     self.bus.post(WiimoteEvent(**changed_state))
@@ -133,7 +130,7 @@ class WiimoteBackend(Backend):
                 if 'buttons' in changed_state:
                     self._last_btn_event_time = time.time()
                 elif last_state and time.time() - \
-                    self._last_btn_event_time >= self._inactivity_timeout:
+                        self._last_btn_event_time >= self._inactivity_timeout:
                     self.logger.info('Wiimote disconnected upon timeout')
                     self.close()
 
@@ -150,4 +147,3 @@ class WiimoteBackend(Backend):
                 self._connection_attempts += 1
 
 # vim:sw=4:ts=4:et:
-
diff --git a/platypush/backend/wiimote/manifest.yaml b/platypush/backend/wiimote/manifest.yaml
new file mode 100644
index 00000000..d904aae0
--- /dev/null
+++ b/platypush/backend/wiimote/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.Wiimote.WiimoteEvent: when the state of the Wiimote (battery,
+      buttons, acceleration etc.) changes
+  install:
+    pip: []
+  package: platypush.backend.wiimote
+  type: backend
diff --git a/platypush/backend/zigbee/mqtt.py b/platypush/backend/zigbee/mqtt/__init__.py
similarity index 100%
rename from platypush/backend/zigbee/mqtt.py
rename to platypush/backend/zigbee/mqtt/__init__.py
diff --git a/platypush/backend/zigbee/mqtt/manifest.yaml b/platypush/backend/zigbee/mqtt/manifest.yaml
new file mode 100644
index 00000000..f1d8ca0f
--- /dev/null
+++ b/platypush/backend/zigbee/mqtt/manifest.yaml
@@ -0,0 +1,45 @@
+manifest:
+  events:
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttDeviceBannedEvent: when a device
+      is bannedfrom the network.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttDeviceBindEvent: when a device bind
+      eventoccurs.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttDeviceConnectedEvent: when a device
+      connectsto the network.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttDevicePairingEvent: when a device
+      is pairing.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttDevicePropertySetEvent: when the
+      properties of aconnected device change.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttDeviceRemovedEvent: when a device
+      is removedfrom the network.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttDeviceRemovedFailedEvent: when a
+      request toremove a device from the network fails.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttDeviceRenamedEvent: when a device
+      isrenamed on the network.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttDeviceUnbindEvent: when a device
+      unbind eventoccurs.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttDeviceWhitelistedEvent: when a device
+      iswhitelisted on the network.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttErrorEvent: when an internal error
+      occurson the zigbee2mqtt service.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttGroupAddedEvent: when a group is
+      added.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttGroupAddedFailedEvent: when a request
+      toadd a new group fails.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttGroupRemoveAllEvent: when all the
+      devicesare removed from a group.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttGroupRemoveAllFailedEvent: when
+      a request toremove all the devices from a group fails.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttGroupRemovedEvent: when a group
+      is removed.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttGroupRemovedFailedEvent: when a
+      request toremove a group fails.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttOfflineEvent: when the service goes
+      offline.
+    platypush.message.event.zigbee.mqtt.ZigbeeMqttOnlineEvent: when the service comes
+      online.
+  install:
+    pip:
+    - paho-mqtt
+  package: platypush.backend.zigbee.mqtt
+  type: backend
diff --git a/platypush/backend/zwave/manifest.yaml b/platypush/backend/zwave/manifest.yaml
new file mode 100644
index 00000000..4ccd9276
--- /dev/null
+++ b/platypush/backend/zwave/manifest.yaml
@@ -0,0 +1,48 @@
+manifest:
+  events:
+    platypush.message.event.zwave.ZwaveButtonCreatedEvent: when a button is added
+      to the network.
+    platypush.message.event.zwave.ZwaveButtonOffEvent: when a button is released.
+    platypush.message.event.zwave.ZwaveButtonOnEvent: when a button is pressed.
+    platypush.message.event.zwave.ZwaveButtonRemovedEvent: when a button is removed
+      from the network.
+    platypush.message.event.zwave.ZwaveCommandEvent: when a command is received on
+      the network.
+    platypush.message.event.zwave.ZwaveCommandWaitingEvent: when a command is waiting
+      for a messageto complete.
+    platypush.message.event.zwave.ZwaveNetworkErrorEvent: when an error occurs on
+      the network.
+    platypush.message.event.zwave.ZwaveNetworkReadyEvent: when the network is up and
+      running.
+    platypush.message.event.zwave.ZwaveNetworkResetEvent: when the network is reset.
+    platypush.message.event.zwave.ZwaveNetworkStoppedEvent: when the network goes
+      down.
+    platypush.message.event.zwave.ZwaveNodeAddedEvent: when a node is added to the
+      network.
+    platypush.message.event.zwave.ZwaveNodeEvent: when a node attribute changes.
+    platypush.message.event.zwave.ZwaveNodeGroupEvent: when a node is associated/de-associated
+      to agroup.
+    platypush.message.event.zwave.ZwaveNodePollingDisabledEvent: when the polling
+      is successfully turnedoff a node.
+    platypush.message.event.zwave.ZwaveNodePollingEnabledEvent: when the polling is
+      successfully turnedon a node.
+    platypush.message.event.zwave.ZwaveNodeQueryCompletedEvent: when all the nodes
+      on the networkhave been queried.
+    platypush.message.event.zwave.ZwaveNodeReadyEvent: when a node is ready.
+    platypush.message.event.zwave.ZwaveNodeRemovedEvent: when a node is removed from
+      the network.
+    platypush.message.event.zwave.ZwaveNodeRenamedEvent: when a node is renamed.
+    platypush.message.event.zwave.ZwaveNodeSceneEvent: when a scene is set on a node.
+    platypush.message.event.zwave.ZwaveValueAddedEvent: when a value is added to a
+      node on the network.
+    platypush.message.event.zwave.ZwaveValueChangedEvent: when the value of a node
+      on the networkchanges.
+    platypush.message.event.zwave.ZwaveValueRefreshedEvent: when the value of a node
+      on the networkis refreshed.
+    platypush.message.event.zwave.ZwaveValueRemovedEvent: when the value of a node
+      on the networkis removed.
+  install:
+    pip:
+    - python-openzwave
+  package: platypush.backend.zwave
+  type: backend
diff --git a/platypush/backend/zwave/mqtt.py b/platypush/backend/zwave/mqtt/__init__.py
similarity index 100%
rename from platypush/backend/zwave/mqtt.py
rename to platypush/backend/zwave/mqtt/__init__.py
diff --git a/platypush/backend/zwave/mqtt/manifest.yaml b/platypush/backend/zwave/mqtt/manifest.yaml
new file mode 100644
index 00000000..37c82ecf
--- /dev/null
+++ b/platypush/backend/zwave/mqtt/manifest.yaml
@@ -0,0 +1,20 @@
+manifest:
+  events:
+    platypush.message.event.zwave.ZwaveNodeAddedEvent: when a node is added to the
+      network.
+    platypush.message.event.zwave.ZwaveNodeAsleepEvent: when a node goes into sleep
+      mode.
+    platypush.message.event.zwave.ZwaveNodeAwakeEvent: when a node goes back into
+      awake mode.
+    platypush.message.event.zwave.ZwaveNodeEvent: when a node attribute changes.
+    platypush.message.event.zwave.ZwaveNodeReadyEvent: when a node is ready.
+    platypush.message.event.zwave.ZwaveNodeRemovedEvent: when a node is removed from
+      the network.
+    platypush.message.event.zwave.ZwaveNodeRenamedEvent: when a node is renamed.
+    platypush.message.event.zwave.ZwaveValueChangedEvent: when the value of a node
+      on the networkchanges.
+  install:
+    pip:
+    - paho-mqtt
+  package: platypush.backend.zwave.mqtt
+  type: backend
diff --git a/platypush/bus/__init__.py b/platypush/bus/__init__.py
index 109304bc..0dd57eb0 100644
--- a/platypush/bus/__init__.py
+++ b/platypush/bus/__init__.py
@@ -92,7 +92,7 @@ class Bus(object):
 
         :param event_type: Event type to subscribe (event inheritance also works).
         :param handler: Event handler - a function that takes an Event object as parameter.
-        :return: A function that can be called to remove the handler (no paramters required).
+        :return: A function that can be called to remove the handler (no parameters required).
         """
         if event_type not in self.event_handlers:
             self.event_handlers[event_type] = set()
diff --git a/platypush/common/__init__.py b/platypush/common/__init__.py
index b4ca9f4b..04a43b1a 100644
--- a/platypush/common/__init__.py
+++ b/platypush/common/__init__.py
@@ -1,4 +1,8 @@
+import inspect
 import logging
+import os
+
+from platypush.utils.manifest import Manifest
 
 logger = logging.getLogger('platypush')
 
@@ -15,3 +19,16 @@ def exec_wrapper(f, *args, **kwargs):
     except Exception as e:
         logger.exception(e)
         return Response(errors=[str(e)])
+
+
+class ExtensionWithManifest:
+    def __init__(self, *_, **__):
+        self._manifest = self.get_manifest()
+
+    def get_manifest(self) -> Manifest:
+        manifest_file = os.path.join(os.path.dirname(inspect.getfile(self.__class__)), 'manifest.yaml')
+        assert os.path.isfile(manifest_file), (
+            'The extension {} has no associated manifest.yaml'.format(self.__class__.__name__)
+        )
+
+        return Manifest.from_file(manifest_file)
diff --git a/platypush/config/__init__.py b/platypush/config/__init__.py
index 78080a91..99e61e7b 100644
--- a/platypush/config/__init__.py
+++ b/platypush/config/__init__.py
@@ -141,22 +141,15 @@ class Config(object):
         self.constants = {}
         self.cronjobs = {}
         self.dashboards = {}
+        self._plugin_manifests = {}
+        self._backend_manifests = {}
 
+        self._init_manifests()
         self._init_constants()
         self._load_scripts()
         self._init_components()
         self._init_dashboards(self._config['dashboards_dir'])
 
-    @staticmethod
-    def _is_special_token(token):
-        return token == 'main.db' or \
-               token == 'token' or \
-               token == 'token_hash' or \
-               token == 'logging' or \
-               token == 'workdir' or \
-               token == 'device_id' or \
-               token == 'environment'
-
     def _read_config_file(self, cfgfile):
         cfgfile_dir = os.path.dirname(os.path.abspath(
             os.path.expanduser(cfgfile)))
@@ -232,7 +225,7 @@ class Config(object):
 
     def _init_components(self):
         for key in self._config.keys():
-            if key.startswith('backend.'):
+            if key.startswith('backend.') and '.'.join(key.split('.')[1:]) in self._backend_manifests:
                 backend_name = '.'.join(key.split('.')[1:])
                 self.backends[backend_name] = self._config[key]
             elif key.startswith('event.hook.'):
@@ -261,9 +254,24 @@ class Config(object):
                     'actions': self._config[key],
                     'args': args,
                 }
-            elif not self._is_special_token(key):
+            elif key in self._plugin_manifests:
                 self.plugins[key] = self._config[key]
 
+    def _init_manifests(self, base_dir: Optional[str] = None):
+        if not base_dir:
+            base_dir = os.path.abspath(os.path.join(__file__, '..', '..'))
+            plugins_dir = os.path.join(base_dir, 'plugins')
+            backends_dir = os.path.join(base_dir, 'backend')
+            self._init_manifests(plugins_dir)
+            self._init_manifests(backends_dir)
+        else:
+            manifests_map = self._plugin_manifests if base_dir.endswith('plugins') else self._backend_manifests
+            for mf in pathlib.Path(base_dir).rglob('manifest.yaml'):
+                with open(mf, 'r') as f:
+                    manifest = yaml.safe_load(f)['manifest']
+                    comp_name = '.'.join(manifest['package'].split('.')[2:])
+                    manifests_map[comp_name] = manifest
+
     def _init_constants(self):
         if 'constants' in self._config:
             self.constants = self._config['constants']
diff --git a/platypush/event/hook.py b/platypush/event/hook.py
index fba3f04b..1d428e36 100644
--- a/platypush/event/hook.py
+++ b/platypush/event/hook.py
@@ -81,7 +81,7 @@ class EventAction(Request):
     def __init__(self, target=None, action=None, **args):
         if target is None:
             target = Config.get('device_id')
-        args_copy = copy.deepcopy(args)
+        args_copy = dict(copy.deepcopy(args))
         super().__init__(target=target, action=action, **args_copy)
 
     @classmethod
diff --git a/platypush/message/event/adafruit.py b/platypush/message/event/adafruit.py
index f4895c24..fea8e2a0 100644
--- a/platypush/message/event/adafruit.py
+++ b/platypush/message/event/adafruit.py
@@ -7,7 +7,7 @@ class ConnectedEvent(Event):
     """
 
     def __init__(self, *args, **kwargs):
-        super().__init__(*args, feed=feed, data=data, **kwargs)
+        super().__init__(*args, **kwargs)
 
 
 class DisconnectedEvent(Event):
@@ -16,7 +16,7 @@ class DisconnectedEvent(Event):
     """
 
     def __init__(self, *args, **kwargs):
-        super().__init__(*args, feed=feed, data=data, **kwargs)
+        super().__init__(*args, **kwargs)
 
 
 class FeedUpdateEvent(Event):
diff --git a/platypush/message/event/button/flic/__init__.py b/platypush/message/event/button/flic/__init__.py
index 3c6a2953..48245a0f 100644
--- a/platypush/message/event/button/flic/__init__.py
+++ b/platypush/message/event/button/flic/__init__.py
@@ -12,17 +12,17 @@ class FlicButtonEvent(Event):
         :param btn_addr: Physical address of the button that originated the event
         :type btn_addr: str
 
-        :param sequence: Detected sequence, as a list of Flic button event types (either "ShortPressEvent" or "LongPressEvent")
+        :param sequence: Detected sequence, as a list of Flic button event types (either "ShortPressEvent" or
+            "LongPressEvent")
         :type sequence: list[str]
         """
 
         super().__init__(btn_addr=btn_addr, sequence=sequence, *args, **kwargs)
 
-
     def matches_condition(self, condition):
         """
-        :param condition: Condition to be checked against, as a sequence of button presses ("ShortPressEvent" and "LongPressEvent")
-        :type condition: list
+        :param condition: Condition to be checked against, as a sequence of button presses ("ShortPressEvent" and
+            "LongPressEvent")
         """
 
         result = EventMatchResult(is_match=False)
@@ -47,6 +47,4 @@ class FlicButtonEvent(Event):
         result.is_match = len(cond_sequence) == 0
         return result
 
-
 # vim:sw=4:ts=4:et:
-
diff --git a/platypush/message/event/chat/slack.py b/platypush/message/event/chat/slack.py
index 52536e0c..b795897d 100644
--- a/platypush/message/event/chat/slack.py
+++ b/platypush/message/event/chat/slack.py
@@ -1,4 +1,4 @@
-from abc import ABC
+from abc import ABCMeta
 from datetime import datetime
 from typing import Union, Optional, Iterable
 
@@ -7,7 +7,7 @@ from dateutil.tz import gettz
 from platypush.message.event import Event
 
 
-class SlackEvent(Event, ABC):
+class SlackEvent(Event, ABCMeta):
     """
     Base class for Slack events.
     """
@@ -26,7 +26,7 @@ class SlackEvent(Event, ABC):
         return datetime.fromtimestamp(timestamp, tz=gettz())
 
 
-class SlackMessageEvent(SlackEvent, ABC):
+class SlackMessageEvent(SlackEvent, ABCMeta):
     """
     Base class for message-related events.
     """
diff --git a/platypush/message/event/joystick.py b/platypush/message/event/joystick.py
index 472049b3..57bf10f8 100644
--- a/platypush/message/event/joystick.py
+++ b/platypush/message/event/joystick.py
@@ -1,4 +1,4 @@
-from abc import ABC
+from abc import ABCMeta
 from typing import Optional, Iterable, Union
 
 from platypush.message.event import Event
@@ -22,7 +22,7 @@ class JoystickEvent(Event):
         super().__init__(*args, code=code, state=state, **kwargs)
 
 
-class _JoystickEvent(Event, ABC):
+class _JoystickEvent(Event, ABCMeta):
     """
     Base joystick event class.
     """
diff --git a/platypush/message/event/video/__init__.py b/platypush/message/event/video/__init__.py
index 6a0140d4..e3eb72be 100644
--- a/platypush/message/event/video/__init__.py
+++ b/platypush/message/event/video/__init__.py
@@ -1,4 +1,3 @@
-from platypush.message.event import Event
 from platypush.message.event.media import MediaEvent
 
 
diff --git a/platypush/platydock/__init__.py b/platypush/platydock/__init__.py
index 8eb0da78..a2597603 100755
--- a/platypush/platydock/__init__.py
+++ b/platypush/platydock/__init__.py
@@ -11,14 +11,17 @@ stop and list) Platypush instances as Docker images.
 import argparse
 import enum
 import os
+import pathlib
 import re
+import shutil
 import subprocess
 import sys
 import textwrap
 import traceback as tb
+import yaml
 
 from platypush.config import Config
-from platypush.context import register_backends, get_plugin, get_backend
+from platypush.utils import manifest
 
 workdir = os.path.join(os.path.expanduser('~'), '.local', 'share',
                        'platypush', 'platydock')
@@ -39,23 +42,23 @@ def _parse_deps(cls):
     deps = []
 
     for line in cls.__doc__.split('\n'):
-        m = re.search('\(``pip install (.+)``\)', line)
+        m = re.search(r'\(``pip install (.+)``\)', line)
         if m:
             deps.append(m.group(1))
 
     return deps
 
 
-def generate_dockerfile(deps, ports, cfgfile, devdir, python_version):
+def generate_dockerfile(deps, ports, cfgfile, device_dir, python_version):
     device_id = Config.get('device_id')
     if not device_id:
         raise RuntimeError(('You need to specify a device_id in {} - Docker ' +
                             'containers cannot rely on hostname').format(cfgfile))
 
-    os.makedirs(devdir, exist_ok=True)
+    os.makedirs(device_dir, exist_ok=True)
     content = textwrap.dedent(
         '''
-        FROM python:{python_version}-slim-buster
+        FROM python:{python_version}-slim-bullseye
 
         RUN mkdir -p /app
         RUN mkdir -p /etc/platypush
@@ -63,66 +66,100 @@ def generate_dockerfile(deps, ports, cfgfile, devdir, python_version):
         '''.format(python_version=python_version)).lstrip()
 
     srcdir = os.path.dirname(cfgfile)
-    cfgfile_copy = os.path.join(devdir, 'config.yaml')
-    subprocess.call(['cp', cfgfile, cfgfile_copy])
+    cfgfile_copy = os.path.join(device_dir, 'config.yaml')
+    shutil.copy(cfgfile, cfgfile_copy, follow_symlinks=True)
     content += 'COPY config.yaml /etc/platypush/\n'
+    backend_config = Config.get_backends()
 
+    # Redis configuration for Docker
+    if 'redis' not in backend_config:
+        backend_config['redis'] = {
+            'redis_args': {
+                'host': 'redis',
+                'port': 6379,
+            }
+        }
+
+        with open(cfgfile_copy, 'a') as f:
+            f.write('\n# Automatically added by platydock, do not remove\n' + yaml.dump({
+                'backend.redis': backend_config['redis'],
+            }) + '\n')
+
+    # Main database configuration
+    has_main_db = False
+    with open(cfgfile_copy, 'r') as f:
+        for line in f.readlines():
+            if re.match(r'^(main.)?db.*', line):
+                has_main_db = True
+                break
+
+    if not has_main_db:
+        with open(cfgfile_copy, 'a') as f:
+            f.write('\n# Automatically added by platydock, do not remove\n' + yaml.dump({
+                'main.db': {
+                    'engine': 'sqlite:////platypush.db',
+                }
+            }) + '\n')
+
+    # Copy included files
     # noinspection PyProtectedMember
     for include in Config._included_files:
         incdir = os.path.relpath(os.path.dirname(include), srcdir)
-        destdir = os.path.join(devdir, incdir)
-
-        try:
-            os.makedirs(destdir)
-        except FileExistsError:
-            pass
-
-        subprocess.call(['cp', include, destdir])
+        destdir = os.path.join(device_dir, incdir)
+        pathlib.Path(destdir).mkdir(parents=True, exist_ok=True)
+        shutil.copy(include, destdir, follow_symlinks=True)
         content += 'RUN mkdir -p /etc/platypush/' + incdir + '\n'
         content += 'COPY ' + os.path.relpath(include, srcdir) + \
                    ' /etc/platypush/' + incdir + '\n'
 
-    content += textwrap.dedent(
-        '''
-        RUN dpkg --configure -a \\
-            && apt-get -f install \\
-            && apt-get --fix-missing install \\
-            && apt-get clean \\
-            && apt-get update \\
-            && apt-get -y upgrade \\
-            && apt-get -y dist-upgrade \\
-            && apt-get install --no-install-recommends -y apt-utils\\
-            && apt-get install --no-install-recommends -y build-essential \\
-            && apt-get install --no-install-recommends -y git \\
-            && apt-get install --no-install-recommends -y libffi-dev \\
-            && apt-get install --no-install-recommends -y libjpeg-dev \\
-            && apt-get install --no-install-recommends -y zlib1g-dev \\
-        ''')
+    # Copy script files
+    scripts_dir = os.path.join(os.path.dirname(cfgfile), 'scripts')
+    if os.path.isdir(scripts_dir):
+        local_scripts_dir = os.path.join(device_dir, 'scripts')
+        remote_scripts_dir = '/etc/platypush/scripts'
+        shutil.copytree(scripts_dir, local_scripts_dir, symlinks=True, dirs_exist_ok=True)
+        content += f'RUN mkdir -p {remote_scripts_dir}\n'
+        content += f'COPY scripts/ {remote_scripts_dir}\n'
 
-    for i, dep in enumerate(deps):
-        content += '\t&& pip install --no-cache-dir {}'.format(dep)
-        if i < len(deps)-1:
-            content += ' \\'.format(dep)
-        content += '\n'
+    packages = deps.pop('packages', None)
+    pip = deps.pop('pip', None)
+    exec_cmds = deps.pop('exec', None)
+    pkg_cmd = f'\n\t&& apt-get install --no-install-recommends -y {" ".join(packages)} \\' if packages else ''
+    pip_cmd = f'\n\t&& pip install {" ".join(pip)} \\' if pip else ''
+    content += f'''
+RUN dpkg --configure -a \\
+    && apt-get -f install \\
+    && apt-get --fix-missing install \\
+    && apt-get clean \\
+    && apt-get update \\
+    && apt-get -y upgrade \\
+    && apt-get -y dist-upgrade \\
+    && apt-get install --no-install-recommends -y apt-utils \\
+    && apt-get install --no-install-recommends -y build-essential \\
+    && apt-get install --no-install-recommends -y git \\
+    && apt-get install --no-install-recommends -y sudo \\
+    && apt-get install --no-install-recommends -y libffi-dev \\
+    && apt-get install --no-install-recommends -y libjpeg-dev \\{pkg_cmd}{pip_cmd}'''
 
-    content += textwrap.dedent(
-        '''
+    for exec_cmd in exec_cmds:
+        content += f'\n\t&& {exec_cmd} \\'
+    content += '''
+    && apt-get install --no-install-recommends -y zlib1g-dev
 
-        RUN git clone --recursive https://git.platypush.tech/platypush/platypush.git /app \\
-            && cd /app \\
-            && pip install -r requirements.txt
+RUN git clone --recursive https://git.platypush.tech/platypush/platypush.git /app \\
+    && cd /app \\
+    && pip install -r requirements.txt
 
-        RUN apt-get remove -y git \\
-            && apt-get remove -y build-essential \\
-            && apt-get remove -y libffi-dev \\
-            && apt-get remove -y libjpeg-dev \\
-            && apt-get remove -y zlib1g-dev \\
-            && apt-get remove -y apt-utils \\
-            && apt-get clean \\
-            && apt-get autoremove -y \\
-            && rm -rf /var/lib/apt/lists/*
-
-        ''')
+RUN apt-get remove -y git \\
+    && apt-get remove -y build-essential \\
+    && apt-get remove -y libffi-dev \\
+    && apt-get remove -y libjpeg-dev \\
+    && apt-get remove -y zlib1g-dev \\
+    && apt-get remove -y apt-utils \\
+    && apt-get clean \\
+    && apt-get autoremove -y \\
+    && rm -rf /var/lib/apt/lists/*
+'''
 
     for port in ports:
         content += 'EXPOSE {}\n'.format(port)
@@ -134,7 +171,7 @@ def generate_dockerfile(deps, ports, cfgfile, devdir, python_version):
         CMD ["python", "-m", "platypush"]
         ''')
 
-    dockerfile = os.path.join(devdir, 'Dockerfile')
+    dockerfile = os.path.join(device_dir, 'Dockerfile')
     print('Generating Dockerfile {}'.format(dockerfile))
 
     with open(dockerfile, 'w') as f:
@@ -145,51 +182,48 @@ def build(args):
     global workdir
 
     ports = set()
-    deps = set()
-
-    parser = argparse.ArgumentParser(prog='platydock build',
-                                     description='Build a Platypush image ' +
-                                                 'from a config.yaml')
+    parser = argparse.ArgumentParser(
+        prog='platydock build',
+        description='Build a Platypush image from a config.yaml'
+    )
 
     parser.add_argument('-c', '--config', type=str, required=True,
                         help='Path to the platypush configuration file')
-    parser.add_argument('-p', '--python-version', type=str, default='3.8',
+    parser.add_argument('-p', '--python-version', type=str, default='3.9',
                         help='Python version to be used')
 
     opts, args = parser.parse_known_args(args)
 
     cfgfile = os.path.abspath(os.path.expanduser(opts.config))
+    manifest._available_package_manager = 'apt'  # Force apt for Debian-based Docker images
+    install_cmds = manifest.get_dependencies_from_conf(cfgfile)
     python_version = opts.python_version
-    Config.init(cfgfile)
-    register_backends()
     backend_config = Config.get_backends()
 
+    # Container exposed ports
     if backend_config.get('http'):
-        http_backend = get_backend('http')
-        ports.add(http_backend.port)
-        if http_backend.websocket_port:
-            ports.add(http_backend.websocket_port)
+        from platypush.backend.http import HttpBackend
+        # noinspection PyProtectedMember
+        ports.add(backend_config['http'].get('port', HttpBackend._DEFAULT_HTTP_PORT))
+        # noinspection PyProtectedMember
+        ports.add(backend_config['http'].get('websocket_port', HttpBackend._DEFAULT_WEBSOCKET_PORT))
 
     if backend_config.get('tcp'):
-        ports.add(get_backend('tcp').port)
+        ports.add(backend_config['tcp']['port'])
 
     if backend_config.get('websocket'):
-        ports.add(get_backend('websocket').port)
+        from platypush.backend.websocket import WebsocketBackend
+        # noinspection PyProtectedMember
+        ports.add(backend_config['websocket'].get('port', WebsocketBackend._default_websocket_port))
 
-    for name in Config.get_backends().keys():
-        deps.update(_parse_deps(get_backend(name)))
+    dev_dir = os.path.join(workdir, Config.get('device_id'))
+    generate_dockerfile(
+        deps=dict(install_cmds), ports=ports, cfgfile=cfgfile, device_dir=dev_dir, python_version=python_version
+    )
 
-    for name in Config.get_plugins().keys():
-        try:
-            deps.update(_parse_deps(get_plugin(name)))
-        except Exception as ex:
-            print('Dependencies parsing error for {}: {}'.format(name, str(ex)))
-
-    devdir = os.path.join(workdir, Config.get('device_id'))
-    generate_dockerfile(deps=deps, ports=ports, cfgfile=cfgfile, devdir=devdir, python_version=python_version)
-
-    subprocess.call(['docker', 'build', '-t', 'platypush-{}'.format(
-        Config.get('device_id')), devdir])
+    subprocess.call(
+        ['docker', 'build', '-t', 'platypush-{}'.format(Config.get('device_id')), dev_dir]
+    )
 
 
 def start(args):
@@ -225,14 +259,13 @@ def start(args):
                                              If set, then attach to the container after starting it up (default: false).
                                              '''))
 
-
     opts, args = parser.parse_known_args(args)
     ports = {}
     dockerfile = os.path.join(workdir, opts.image, 'Dockerfile')
 
     with open(dockerfile) as f:
         for line in f:
-            m = re.match('expose (\d+)', line.strip().lower())
+            m = re.match(r'expose (\d+)', line.strip().lower())
             if m:
                 ports[m.group(1)] = m.group(1)
 
@@ -288,7 +321,7 @@ def rm(args):
     opts, args = parser.parse_known_args(args)
 
     subprocess.call(['docker', 'rmi', 'platypush-{}'.format(opts.image)])
-    subprocess.call(['rm', '-r', os.path.join(workdir, opts.image)])
+    shutil.rmtree(os.path.join(workdir, opts.image), ignore_errors=True)
 
 
 def ls(args):
@@ -305,7 +338,7 @@ def ls(args):
     images = []
 
     for line in output:
-        if re.match('^platypush-(.+?)\s.*', line):
+        if re.match(r'^platypush-(.+?)\s.*', line):
             if not opts.filter or (opts.filter and opts.filter in line):
                 images.append(line)
 
diff --git a/platypush/plugins/__init__.py b/platypush/plugins/__init__.py
index fd0042aa..ae7a85ef 100644
--- a/platypush/plugins/__init__.py
+++ b/platypush/plugins/__init__.py
@@ -2,11 +2,11 @@ import logging
 import threading
 import time
 
-from abc import ABC
 from functools import wraps
 from typing import Optional
 
 from platypush.bus import Bus
+from platypush.common import ExtensionWithManifest
 from platypush.event import EventGenerator
 from platypush.message.response import Response
 from platypush.utils import get_decorators, get_plugin_name_by_class, set_thread_name
@@ -39,7 +39,7 @@ def action(f):
     return _execute_action
 
 
-class Plugin(EventGenerator):
+class Plugin(EventGenerator, ExtensionWithManifest):
     """ Base plugin class """
 
     def __init__(self, **kwargs):
@@ -58,7 +58,7 @@ class Plugin(EventGenerator):
         return getattr(self, method)(*args, **kwargs)
 
 
-class RunnablePlugin(ABC, Plugin):
+class RunnablePlugin(Plugin):
     """
     Class for runnable plugins - i.e. plugins that have a start/stop method and can be started.
     """
diff --git a/platypush/plugins/adafruit/io.py b/platypush/plugins/adafruit/io/__init__.py
similarity index 97%
rename from platypush/plugins/adafruit/io.py
rename to platypush/plugins/adafruit/io/__init__.py
index f8c2684d..2f7e100e 100644
--- a/platypush/plugins/adafruit/io.py
+++ b/platypush/plugins/adafruit/io/__init__.py
@@ -85,7 +85,13 @@ class AdafruitIoPlugin(Plugin):
     def _get_redis():
         from redis import Redis
 
-        redis_args = get_backend('redis').redis_args
+        redis_args = {
+            'host': 'localhost',
+        }
+
+        redis_backend = get_backend('redis')
+        if redis_backend:
+            redis_args = get_backend('redis').redis_args
         redis_args['socket_timeout'] = 1
         return Redis(**redis_args)
 
diff --git a/platypush/plugins/adafruit/io/manifest.yaml b/platypush/plugins/adafruit/io/manifest.yaml
new file mode 100644
index 00000000..b346fa3c
--- /dev/null
+++ b/platypush/plugins/adafruit/io/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - adafruit-io
+  package: platypush.plugins.adafruit.io
+  type: plugin
diff --git a/platypush/plugins/alarm.py b/platypush/plugins/alarm/__init__.py
similarity index 100%
rename from platypush/plugins/alarm.py
rename to platypush/plugins/alarm/__init__.py
diff --git a/platypush/plugins/alarm/manifest.yaml b/platypush/plugins/alarm/manifest.yaml
new file mode 100644
index 00000000..68f2434f
--- /dev/null
+++ b/platypush/plugins/alarm/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.alarm
+  type: plugin
diff --git a/platypush/plugins/arduino.py b/platypush/plugins/arduino/__init__.py
similarity index 100%
rename from platypush/plugins/arduino.py
rename to platypush/plugins/arduino/__init__.py
diff --git a/platypush/plugins/arduino/manifest.yaml b/platypush/plugins/arduino/manifest.yaml
new file mode 100644
index 00000000..dd644b38
--- /dev/null
+++ b/platypush/plugins/arduino/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pyfirmata2
+  package: platypush.plugins.arduino
+  type: plugin
diff --git a/platypush/plugins/assistant/echo/manifest.yaml b/platypush/plugins/assistant/echo/manifest.yaml
new file mode 100644
index 00000000..b19df7be
--- /dev/null
+++ b/platypush/plugins/assistant/echo/manifest.yaml
@@ -0,0 +1,13 @@
+manifest:
+  events:
+    platypush.message.event.assistant.ConversationEndEvent: when a new conversation
+      ends
+    platypush.message.event.assistant.ConversationStartEvent: when a new conversation
+      starts
+    platypush.message.event.assistant.SpeechRecognizedEvent: when a new voice command
+      is recognized
+  install:
+    pip:
+    - avs
+  package: platypush.plugins.assistant.echo
+  type: plugin
diff --git a/platypush/plugins/assistant/google/manifest.yaml b/platypush/plugins/assistant/google/manifest.yaml
new file mode 100644
index 00000000..0ec3fa8d
--- /dev/null
+++ b/platypush/plugins/assistant/google/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.assistant.google
+  type: plugin
diff --git a/platypush/plugins/assistant/google/pushtotalk.py b/platypush/plugins/assistant/google/pushtotalk/__init__.py
similarity index 100%
rename from platypush/plugins/assistant/google/pushtotalk.py
rename to platypush/plugins/assistant/google/pushtotalk/__init__.py
diff --git a/platypush/plugins/assistant/google/pushtotalk/manifest.yaml b/platypush/plugins/assistant/google/pushtotalk/manifest.yaml
new file mode 100644
index 00000000..2f374507
--- /dev/null
+++ b/platypush/plugins/assistant/google/pushtotalk/manifest.yaml
@@ -0,0 +1,14 @@
+manifest:
+  events:
+    platypush.message.event.assistant.ConversationEndEvent: when a new conversation
+      ends
+    platypush.message.event.assistant.ConversationStartEvent: when a new conversation
+      starts
+    platypush.message.event.assistant.SpeechRecognizedEvent: when a new voice command
+      is recognized
+  install:
+    pip:
+    - tenacity
+    - google-assistant-sdk
+  package: platypush.plugins.assistant.google.pushtotalk
+  type: plugin
diff --git a/platypush/plugins/autoremote.py b/platypush/plugins/autoremote/__init__.py
similarity index 97%
rename from platypush/plugins/autoremote.py
rename to platypush/plugins/autoremote/__init__.py
index f73c6d54..a1d26d45 100644
--- a/platypush/plugins/autoremote.py
+++ b/platypush/plugins/autoremote/__init__.py
@@ -10,10 +10,6 @@ class AutoremotePlugin(Plugin):
     Android device that runs AutoRemote (https://joaoapps.com/autoremote/).
     You can also build custom actions to run on your Android device upon
     AutoRemote events using Tasker (https://tasker.joaoapps.com/).
-
-    Requires:
-
-        * **requests** (``pip install requests``)
     """
 
     _AUTOREMOTE_BASE_URL = 'https://autoremotejoaomgcd.appspot.com'
@@ -56,7 +52,7 @@ class AutoremotePlugin(Plugin):
 
     @action
     def send_message(self, msg, key=None, password=None, devices=None, target=None,
-                     sender=None, ttl=None, group=None, *args, **kwargs):
+                     sender=None, ttl=None, group=None, *_, **__):
         """
         Sends a message to AutoRemote.
 
@@ -85,9 +81,6 @@ class AutoremotePlugin(Plugin):
         :param group: Message group name (default: None)
         :type group: str
         """
-
-        target_devices = []
-
         if devices:
             target_devices = [self.devices[name] for name in self.devices.keys()
                               if name in devices]
@@ -130,14 +123,11 @@ class AutoremotePlugin(Plugin):
                           dismiss_on_touch=False, priority=0, number=None,
                           content_info=None, subtext=None, max_progress=None,
                           progress=None, indeterminate_progress=False,
-                          action_on_dismiss=None, cancel=False, *args, **kwargs):
+                          action_on_dismiss=None, cancel=False, *_, **__):
         """
         Sends a notification to AutoRemote. Click on your AutoRemote URL ->
         Send Notification for a detailed explanation of the attributes.
         """
-
-        target_devices = []
-
         if devices:
             target_devices = [self.devices[name] for name in self.devices.keys()
                               if name in devices]
diff --git a/platypush/plugins/autoremote/manifest.yaml b/platypush/plugins/autoremote/manifest.yaml
new file mode 100644
index 00000000..91584916
--- /dev/null
+++ b/platypush/plugins/autoremote/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.autoremote
+  type: plugin
diff --git a/platypush/plugins/bluetooth/__init__.py b/platypush/plugins/bluetooth/__init__.py
index 0c72921e..f221243b 100644
--- a/platypush/plugins/bluetooth/__init__.py
+++ b/platypush/plugins/bluetooth/__init__.py
@@ -27,6 +27,7 @@ class BluetoothPlugin(SensorPlugin):
 
     class _DeviceDiscoverer(bluetooth.DeviceDiscoverer):
         def __init__(self, name, *args, **kwargs):
+            # noinspection PyArgumentList
             super().__init__(*args, **kwargs)
             self.name = name
             self.device = {}
@@ -35,6 +36,7 @@ class BluetoothPlugin(SensorPlugin):
         def pre_inquiry(self):
             self.done = False
 
+        # noinspection PyUnusedLocal
         def device_discovered(self, dev_addr, dev_class, rssi, dev_name):
             dev_name = dev_name.decode()
             if dev_name == self.name:
diff --git a/platypush/plugins/bluetooth/ble.py b/platypush/plugins/bluetooth/ble/__init__.py
similarity index 100%
rename from platypush/plugins/bluetooth/ble.py
rename to platypush/plugins/bluetooth/ble/__init__.py
diff --git a/platypush/plugins/bluetooth/ble/manifest.yaml b/platypush/plugins/bluetooth/ble/manifest.yaml
new file mode 100644
index 00000000..4f6c29bd
--- /dev/null
+++ b/platypush/plugins/bluetooth/ble/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pybluez
+    - gattlib
+  package: platypush.plugins.bluetooth.ble
+  type: plugin
diff --git a/platypush/plugins/bluetooth/manifest.yaml b/platypush/plugins/bluetooth/manifest.yaml
new file mode 100644
index 00000000..75ab682b
--- /dev/null
+++ b/platypush/plugins/bluetooth/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pybluez
+    - pyobex
+  package: platypush.plugins.bluetooth
+  type: plugin
diff --git a/platypush/plugins/calendar/__init__.py b/platypush/plugins/calendar/__init__.py
index 377848b2..191e1967 100644
--- a/platypush/plugins/calendar/__init__.py
+++ b/platypush/plugins/calendar/__init__.py
@@ -22,9 +22,6 @@ class CalendarPlugin(Plugin, CalendarInterface):
     """
     The CalendarPlugin allows you to keep track of multiple calendars (Google or
     iCal URLs) and get joined events from all of them.
-
-    Requires:
-        * **dateutil** (``pip install python-dateutil``)
     """
 
     def __init__(self, calendars=None, *args, **kwargs):
diff --git a/platypush/plugins/calendar/ical.py b/platypush/plugins/calendar/ical/__init__.py
similarity index 85%
rename from platypush/plugins/calendar/ical.py
rename to platypush/plugins/calendar/ical/__init__.py
index 792d1cc3..4f8f0294 100644
--- a/platypush/plugins/calendar/ical.py
+++ b/platypush/plugins/calendar/ical/__init__.py
@@ -17,7 +17,7 @@ class CalendarIcalPlugin(Plugin, CalendarInterface):
     Requires:
 
         * **icalendar** (``pip install icalendar``)
-        * **python-dateutil** (``pip install python-dateutil``)
+
     """
 
     def __init__(self, url, *args, **kwargs):
@@ -28,8 +28,8 @@ class CalendarIcalPlugin(Plugin, CalendarInterface):
         super().__init__(*args, **kwargs)
         self.url = url
 
-
-    def _translate_event(self, event):
+    @staticmethod
+    def _translate_event(event):
         return {
             'id': str(event.get('uid')) if event.get('uid') else None,
             'kind': 'calendar#event',
@@ -57,7 +57,6 @@ class CalendarIcalPlugin(Plugin, CalendarInterface):
             },
         }
 
-
     @action
     def get_upcoming_events(self, max_results=10, only_participating=True):
         """
@@ -71,7 +70,7 @@ class CalendarIcalPlugin(Plugin, CalendarInterface):
         events = []
         response = requests.get(self.url)
         assert response.ok, \
-                "HTTP error while getting events from {}: {}".format(self.url, response.text)
+            "HTTP error while getting events from {}: {}".format(self.url, response.text)
 
         calendar = Calendar.from_ical(response.text)
         for event in calendar.walk():
@@ -82,16 +81,14 @@ class CalendarIcalPlugin(Plugin, CalendarInterface):
 
             if event['status'] and event['responseStatus'] \
                     and dateutil.parser.parse(event['end']['dateTime']) >= \
-                        datetime.datetime.now(pytz.timezone('UTC')) \
+                    datetime.datetime.now(pytz.timezone('UTC')) \
                     and (
-                        (only_participating
-                         and event['status'] == 'confirmed'
-                         and event['responseStatus'] in ['accepted', 'tentative'])
-                        or not only_participating):
+                    (only_participating
+                     and event['status'] == 'confirmed'
+                     and event['responseStatus'] in ['accepted', 'tentative'])
+                    or not only_participating):
                 events.append(event)
 
         return events
 
-
 # vim:sw=4:ts=4:et:
-
diff --git a/platypush/plugins/calendar/ical/manifest.yaml b/platypush/plugins/calendar/ical/manifest.yaml
new file mode 100644
index 00000000..e451d788
--- /dev/null
+++ b/platypush/plugins/calendar/ical/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - icalendar
+  package: platypush.plugins.calendar.ical
+  type: plugin
diff --git a/platypush/plugins/calendar/manifest.yaml b/platypush/plugins/calendar/manifest.yaml
new file mode 100644
index 00000000..5291334b
--- /dev/null
+++ b/platypush/plugins/calendar/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.calendar
+  type: plugin
diff --git a/platypush/plugins/camera/__init__.py b/platypush/plugins/camera/__init__.py
index d85b51e7..2182add2 100644
--- a/platypush/plugins/camera/__init__.py
+++ b/platypush/plugins/camera/__init__.py
@@ -490,6 +490,7 @@ class CameraPlugin(Plugin, ABC):
 
         return image_file
 
+    # noinspection PyUnusedLocal
     @action
     def take_picture(self, image_file: str, preview: bool = False, **camera) -> str:
         """
diff --git a/platypush/plugins/camera/android/ipcam.py b/platypush/plugins/camera/android/ipcam/__init__.py
similarity index 100%
rename from platypush/plugins/camera/android/ipcam.py
rename to platypush/plugins/camera/android/ipcam/__init__.py
diff --git a/platypush/plugins/camera/android/ipcam/manifest.yaml b/platypush/plugins/camera/android/ipcam/manifest.yaml
new file mode 100644
index 00000000..eeae48c2
--- /dev/null
+++ b/platypush/plugins/camera/android/ipcam/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.camera.android.ipcam
+  type: plugin
diff --git a/platypush/plugins/camera/cv.py b/platypush/plugins/camera/cv/__init__.py
similarity index 100%
rename from platypush/plugins/camera/cv.py
rename to platypush/plugins/camera/cv/__init__.py
diff --git a/platypush/plugins/camera/cv/manifest.yaml b/platypush/plugins/camera/cv/manifest.yaml
new file mode 100644
index 00000000..5c2befa2
--- /dev/null
+++ b/platypush/plugins/camera/cv/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - opencv-python
+    - Pillow
+  package: platypush.plugins.camera.cv
+  type: plugin
diff --git a/platypush/plugins/camera/ffmpeg/manifest.yaml b/platypush/plugins/camera/ffmpeg/manifest.yaml
new file mode 100644
index 00000000..62d3dc67
--- /dev/null
+++ b/platypush/plugins/camera/ffmpeg/manifest.yaml
@@ -0,0 +1,9 @@
+manifest:
+  events: {}
+  install:
+    apt:
+      - ffmpeg
+    pacman:
+      - ffmpeg
+  package: platypush.plugins.camera.ffmpeg
+  type: plugin
diff --git a/platypush/plugins/camera/gstreamer/__init__.py b/platypush/plugins/camera/gstreamer/__init__.py
index 50df0d8e..2654b9fa 100644
--- a/platypush/plugins/camera/gstreamer/__init__.py
+++ b/platypush/plugins/camera/gstreamer/__init__.py
@@ -14,7 +14,15 @@ class CameraGstreamerPlugin(CameraPlugin):
 
     Requires:
 
-        * **gst-python** (``pip install gst-python``)
+        * **gst-python**
+
+    On Debian and derived systems:
+
+        * ``[sudo] apt-get install python3-gi python3-gst-1.0
+
+    On Arch and derived systems:
+
+        * ``[sudo] pacman -S gst-python
 
     """
 
diff --git a/platypush/plugins/camera/gstreamer/manifest.yaml b/platypush/plugins/camera/gstreamer/manifest.yaml
new file mode 100644
index 00000000..64128f7c
--- /dev/null
+++ b/platypush/plugins/camera/gstreamer/manifest.yaml
@@ -0,0 +1,12 @@
+manifest:
+  events: {}
+  install:
+    apt:
+      - python3-gi
+      - python3-gst-1.0
+    pacman:
+      - gst-python
+      - python-gobject
+
+  package: platypush.plugins.camera.gstreamer
+  type: plugin
diff --git a/platypush/plugins/camera/ir/mlx90640/manifest.yaml b/platypush/plugins/camera/ir/mlx90640/manifest.yaml
new file mode 100644
index 00000000..d2326e0a
--- /dev/null
+++ b/platypush/plugins/camera/ir/mlx90640/manifest.yaml
@@ -0,0 +1,9 @@
+manifest:
+  events: {}
+  install:
+    apt:
+      - libi2c-dev
+    pacman:
+      - i2c-tools
+  package: platypush.plugins.camera.ir.mlx90640
+  type: plugin
diff --git a/platypush/plugins/camera/pi/manifest.yaml b/platypush/plugins/camera/pi/manifest.yaml
new file mode 100644
index 00000000..d8e06a82
--- /dev/null
+++ b/platypush/plugins/camera/pi/manifest.yaml
@@ -0,0 +1,9 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - picamera
+    - numpy
+    - Pillow
+  package: platypush.plugins.camera.pi
+  type: plugin
diff --git a/platypush/plugins/chat/telegram.py b/platypush/plugins/chat/telegram/__init__.py
similarity index 100%
rename from platypush/plugins/chat/telegram.py
rename to platypush/plugins/chat/telegram/__init__.py
diff --git a/platypush/plugins/chat/telegram/manifest.yaml b/platypush/plugins/chat/telegram/manifest.yaml
new file mode 100644
index 00000000..8f33fecf
--- /dev/null
+++ b/platypush/plugins/chat/telegram/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - python-telegram-bot
+  package: platypush.plugins.chat.telegram
+  type: plugin
diff --git a/platypush/plugins/clipboard.py b/platypush/plugins/clipboard/__init__.py
similarity index 100%
rename from platypush/plugins/clipboard.py
rename to platypush/plugins/clipboard/__init__.py
diff --git a/platypush/plugins/clipboard/manifest.yaml b/platypush/plugins/clipboard/manifest.yaml
new file mode 100644
index 00000000..38c26866
--- /dev/null
+++ b/platypush/plugins/clipboard/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pyperclip
+  package: platypush.plugins.clipboard
+  type: plugin
diff --git a/platypush/plugins/config.py b/platypush/plugins/config/__init__.py
similarity index 88%
rename from platypush/plugins/config.py
rename to platypush/plugins/config/__init__.py
index f8cf7558..77c4452a 100644
--- a/platypush/plugins/config.py
+++ b/platypush/plugins/config/__init__.py
@@ -6,6 +6,10 @@ from platypush.plugins import Plugin, action
 
 
 class ConfigPlugin(Plugin):
+    """
+    This plugin can be used to programmatically access the application configuration.
+    """
+
     @action
     def get(self) -> dict:
         return Config.get()
diff --git a/platypush/plugins/config/manifest.yaml b/platypush/plugins/config/manifest.yaml
new file mode 100644
index 00000000..77a56e7a
--- /dev/null
+++ b/platypush/plugins/config/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.config
+  type: plugin
diff --git a/platypush/plugins/covid19.py b/platypush/plugins/covid19/__init__.py
similarity index 100%
rename from platypush/plugins/covid19.py
rename to platypush/plugins/covid19/__init__.py
diff --git a/platypush/plugins/covid19/manifest.yaml b/platypush/plugins/covid19/manifest.yaml
new file mode 100644
index 00000000..2cdf8127
--- /dev/null
+++ b/platypush/plugins/covid19/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.covid19
+  type: plugin
diff --git a/platypush/plugins/csv.py b/platypush/plugins/csv/__init__.py
similarity index 98%
rename from platypush/plugins/csv.py
rename to platypush/plugins/csv/__init__.py
index f19eb12f..1cd15b33 100644
--- a/platypush/plugins/csv.py
+++ b/platypush/plugins/csv/__init__.py
@@ -1,7 +1,10 @@
 import csv
 import os
 from typing import Optional, List, Any, Union, Dict
-from typing.io import TextIO
+try:
+    from typing.io import TextIO
+except ImportError:
+    from typing import TextIO
 
 from platypush.plugins import Plugin, action
 
diff --git a/platypush/plugins/csv/manifest.yaml b/platypush/plugins/csv/manifest.yaml
new file mode 100644
index 00000000..f977e22a
--- /dev/null
+++ b/platypush/plugins/csv/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.csv
+  type: plugin
diff --git a/platypush/plugins/db/__init__.py b/platypush/plugins/db/__init__.py
index 0ea221a0..fb56e1f5 100644
--- a/platypush/plugins/db/__init__.py
+++ b/platypush/plugins/db/__init__.py
@@ -15,9 +15,6 @@ class DbPlugin(Plugin):
     Database plugin. It allows you to programmatically select, insert, update
     and delete records on a database backend through requests, procedures and
     event hooks.
-
-    Requires:
-        * **sqlalchemy** (``pip install sqlalchemy``)
     """
 
     engine = None
@@ -28,8 +25,8 @@ class DbPlugin(Plugin):
         """
         :param engine: Default SQLAlchemy connection engine string (e.g.  ``sqlite:///:memory:`` or ``mysql://user:pass@localhost/test``) that will be used. You can override the default engine in the db actions.
         :type engine: str
-        :param args: Extra arguments that will be passed to ``sqlalchemy.create_engine`` (see http://docs.sqlalchemy.org/en/latest/core/engines.html)
-        :param kwargs: Extra kwargs that will be passed to ``sqlalchemy.create_engine`` (see http://docs.sqlalchemy.org/en/latest/core/engines.html)
+        :param args: Extra arguments that will be passed to ``sqlalchemy.create_engine`` (see https://docs.sqlalchemy.org/en/latest/core/engines.html)
+        :param kwargs: Extra kwargs that will be passed to ``sqlalchemy.create_engine`` (seehttps:///docs.sqlalchemy.org/en/latest/core/engines.html)
         """
 
         super().__init__()
@@ -46,6 +43,7 @@ class DbPlugin(Plugin):
 
         return self.engine
 
+    # noinspection PyUnusedLocal
     @staticmethod
     def _build_condition(table, column, value):
         if isinstance(value, str):
@@ -71,8 +69,8 @@ class DbPlugin(Plugin):
         :type statement: str
         :param engine: Engine to be used (default: default class engine)
         :type engine: str
-        :param args: Extra arguments that will be passed to ``sqlalchemy.create_engine`` (see http://docs.sqlalchemy.org/en/latest/core/engines.html)
-        :param kwargs: Extra kwargs that will be passed to ``sqlalchemy.create_engine`` (see http://docs.sqlalchemy.org/en/latest/core/engines.html)
+        :param args: Extra arguments that will be passed to ``sqlalchemy.create_engine`` (see https://docs.sqlalchemy.org/en/latest/core/engines.html)
+        :param kwargs: Extra kwargs that will be passed to ``sqlalchemy.create_engine`` (seehttps:///docs.sqlalchemy.org/en/latest/core/engines.html)
         """
 
         engine = self._get_engine(engine, *args, **kwargs)
@@ -124,9 +122,9 @@ class DbPlugin(Plugin):
         :param engine: Engine to be used (default: default class engine)
         :type engine: str
         :param args: Extra arguments that will be passed to ``sqlalchemy.create_engine``
-            (see http://docs.sqlalchemy.org/en/latest/core/engines.html)
+            (see https://docs.sqlalchemy.org/en/latest/core/engines.html)
         :param kwargs: Extra kwargs that will be passed to ``sqlalchemy.create_engine``
-            (see http://docs.sqlalchemy.org/en/latest/core/engines.html)
+            (seehttps:///docs.sqlalchemy.org/en/latest/core/engines.html)
         :returns: List of hashes representing the result rows.
 
         Examples:
@@ -206,8 +204,8 @@ class DbPlugin(Plugin):
         :type key_columns: list
         :param on_duplicate_update: If set, update the records in case of duplicate rows (default: False). If set, you'll need to specify ``key_columns`` as well.
         :type on_duplicate_update: bool
-        :param args: Extra arguments that will be passed to ``sqlalchemy.create_engine`` (see http://docs.sqlalchemy.org/en/latest/core/engines.html)
-        :param kwargs: Extra kwargs that will be passed to ``sqlalchemy.create_engine`` (see http://docs.sqlalchemy.org/en/latest/core/engines.html)
+        :param args: Extra arguments that will be passed to ``sqlalchemy.create_engine`` (see https://docs.sqlalchemy.org/en/latest/core/engines.html)
+        :param kwargs: Extra kwargs that will be passed to ``sqlalchemy.create_engine`` (seehttps:///docs.sqlalchemy.org/en/latest/core/engines.html)
 
         Example:
 
@@ -267,8 +265,8 @@ class DbPlugin(Plugin):
         :type key_columns: list
         :param engine: Engine to be used (default: default class engine)
         :type engine: str
-        :param args: Extra arguments that will be passed to ``sqlalchemy.create_engine`` (see http://docs.sqlalchemy.org/en/latest/core/engines.html)
-        :param kwargs: Extra kwargs that will be passed to ``sqlalchemy.create_engine`` (see http://docs.sqlalchemy.org/en/latest/core/engines.html)
+        :param args: Extra arguments that will be passed to ``sqlalchemy.create_engine`` (see https://docs.sqlalchemy.org/en/latest/core/engines.html)
+        :param kwargs: Extra kwargs that will be passed to ``sqlalchemy.create_engine`` (seehttps:///docs.sqlalchemy.org/en/latest/core/engines.html)
 
         Example:
 
@@ -323,8 +321,8 @@ class DbPlugin(Plugin):
         :type records: list
         :param engine: Engine to be used (default: default class engine)
         :type engine: str
-        :param args: Extra arguments that will be passed to ``sqlalchemy.create_engine`` (see http://docs.sqlalchemy.org/en/latest/core/engines.html)
-        :param kwargs: Extra kwargs that will be passed to ``sqlalchemy.create_engine`` (see http://docs.sqlalchemy.org/en/latest/core/engines.html)
+        :param args: Extra arguments that will be passed to ``sqlalchemy.create_engine`` (see https://docs.sqlalchemy.org/en/latest/core/engines.html)
+        :param kwargs: Extra kwargs that will be passed to ``sqlalchemy.create_engine`` (seehttps:///docs.sqlalchemy.org/en/latest/core/engines.html)
 
         Example:
 
diff --git a/platypush/plugins/db/manifest.yaml b/platypush/plugins/db/manifest.yaml
new file mode 100644
index 00000000..4ff19b16
--- /dev/null
+++ b/platypush/plugins/db/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.db
+  type: plugin
diff --git a/platypush/plugins/dbus.py b/platypush/plugins/dbus/__init__.py
similarity index 100%
rename from platypush/plugins/dbus.py
rename to platypush/plugins/dbus/__init__.py
diff --git a/platypush/plugins/dbus/manifest.yaml b/platypush/plugins/dbus/manifest.yaml
new file mode 100644
index 00000000..dfd484f5
--- /dev/null
+++ b/platypush/plugins/dbus/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - dbus-python
+  package: platypush.plugins.dbus
+  type: plugin
diff --git a/platypush/plugins/dropbox.py b/platypush/plugins/dropbox/__init__.py
similarity index 100%
rename from platypush/plugins/dropbox.py
rename to platypush/plugins/dropbox/__init__.py
diff --git a/platypush/plugins/dropbox/manifest.yaml b/platypush/plugins/dropbox/manifest.yaml
new file mode 100644
index 00000000..2e6d807e
--- /dev/null
+++ b/platypush/plugins/dropbox/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - dropbox
+  package: platypush.plugins.dropbox
+  type: plugin
diff --git a/platypush/plugins/esp/__init__.py b/platypush/plugins/esp/__init__.py
index ad57be9d..ba328eb0 100644
--- a/platypush/plugins/esp/__init__.py
+++ b/platypush/plugins/esp/__init__.py
@@ -2,9 +2,10 @@ import base64
 import io
 import os
 import threading
-
 from typing import Dict, Optional, List, Any, Union
 
+import websocket
+
 from platypush import Response
 from platypush.message.response.esp import EspWifiScanResult, EspWifiConfigResult
 from platypush.plugins import Plugin, action
@@ -60,11 +61,6 @@ class EspPlugin(Plugin):
 
             - Follow the instructions, set a password and reset your device. A websocket service should be available
               by default on the port 8266 of your ESP8266/ESP32 and it can accept commands sent by platypush.
-
-        Requires:
-
-            * **websocket-client** (``pip install websocket-client``)
-
         """
 
     def __init__(self, devices: List[Union[Device, dict]] = None, **kwargs):
@@ -114,14 +110,15 @@ class EspPlugin(Plugin):
             conn.close()
 
     def on_open(self, conn: Connection):
-        def callback(ws):
+        def callback(*_):
             conn.on_connect()
-            self.logger.info('Connection to {} opened'.format(ws.url))
+            self.logger.info('Connection to {} opened'.format(conn.ws.url))
 
         return callback
 
     def on_message(self, conn: Connection):
-        def handler(ws, msg):
+        def handler(*args):
+            msg = args[1] if len(args) > 1 else args[0]
             if not isinstance(msg, str):
                 # Bytes sequences will be handled by on_data
                 return
@@ -147,7 +144,7 @@ class EspPlugin(Plugin):
 
                 return
 
-            self.logger.debug('Message received on {}: {}'.format(ws.url, msg))
+            self.logger.debug('Message received on {}: {}'.format(conn.ws.url, msg))
 
         def callback(ws, msg):
             try:
@@ -174,9 +171,7 @@ class EspPlugin(Plugin):
                 return
 
         # noinspection PyUnusedLocal
-        def callback(ws, data, data_type, continue_flag):
-            import websocket
-
+        def callback(ws, data, data_type, *_):
             try:
                 if data_type == websocket.ABNF.OPCODE_BINARY:
                     handler(ws, data)
@@ -187,9 +182,9 @@ class EspPlugin(Plugin):
         return callback
 
     def on_close(self, conn: Connection):
-        def callback(ws):
+        def callback(*_):
             try:
-                ws.close()
+                conn.ws.close()
             except Exception as e:
                 self.logger.warning('Could not close connection: {}'.format(str(e)))
 
@@ -199,9 +194,10 @@ class EspPlugin(Plugin):
         return callback
 
     def on_error(self, conn: Connection):
-        def callback(ws, err):
+        def callback(*args):
+            err = args[1] if len(args) > 1 else args[0]
             conn.on_close()
-            self.logger.warning('Error on the connection to {}: {}'.format(ws.url, err))
+            self.logger.warning('Websocket connection error: {}'.format(err))
 
         return callback
 
@@ -242,8 +238,6 @@ class EspPlugin(Plugin):
         :param password: ESP WebREPL password.
         :param timeout: Connection timeout (default: 10 seconds).
         """
-        import websocket
-
         device = self._get_device(device=device, host=host, port=port, password=password)
         host = device['host']
         port = device['port']
diff --git a/platypush/plugins/esp/manifest.yaml b/platypush/plugins/esp/manifest.yaml
new file mode 100644
index 00000000..37f39fe8
--- /dev/null
+++ b/platypush/plugins/esp/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.esp
+  type: plugin
diff --git a/platypush/plugins/ffmpeg.py b/platypush/plugins/ffmpeg/__init__.py
similarity index 100%
rename from platypush/plugins/ffmpeg.py
rename to platypush/plugins/ffmpeg/__init__.py
diff --git a/platypush/plugins/ffmpeg/manifest.yaml b/platypush/plugins/ffmpeg/manifest.yaml
new file mode 100644
index 00000000..5f2454fd
--- /dev/null
+++ b/platypush/plugins/ffmpeg/manifest.yaml
@@ -0,0 +1,11 @@
+manifest:
+  events: {}
+  install:
+    pip:
+      - ffmpeg-python
+    apt:
+      - ffmpeg
+    pacman:
+      - ffmpeg
+  package: platypush.plugins.ffmpeg
+  type: plugin
diff --git a/platypush/plugins/file.py b/platypush/plugins/file/__init__.py
similarity index 100%
rename from platypush/plugins/file.py
rename to platypush/plugins/file/__init__.py
diff --git a/platypush/plugins/file/manifest.yaml b/platypush/plugins/file/manifest.yaml
new file mode 100644
index 00000000..cda28b79
--- /dev/null
+++ b/platypush/plugins/file/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.file
+  type: plugin
diff --git a/platypush/plugins/foursquare.py b/platypush/plugins/foursquare/__init__.py
similarity index 100%
rename from platypush/plugins/foursquare.py
rename to platypush/plugins/foursquare/__init__.py
diff --git a/platypush/plugins/foursquare/manifest.yaml b/platypush/plugins/foursquare/manifest.yaml
new file mode 100644
index 00000000..35acebd0
--- /dev/null
+++ b/platypush/plugins/foursquare/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.foursquare
+  type: plugin
diff --git a/platypush/plugins/google/calendar.py b/platypush/plugins/google/calendar/__init__.py
similarity index 85%
rename from platypush/plugins/google/calendar.py
rename to platypush/plugins/google/calendar/__init__.py
index 5a633538..b5caea8b 100644
--- a/platypush/plugins/google/calendar.py
+++ b/platypush/plugins/google/calendar/__init__.py
@@ -11,7 +11,13 @@ from platypush.plugins.calendar import CalendarInterface
 
 class GoogleCalendarPlugin(GooglePlugin, CalendarInterface):
     """
-    Google calendar plugin
+    Google calendar plugin.
+
+    Requires:
+
+        * **google-api-python-client** (``pip install google-api-python-client``)
+        * **oauth2client** (``pip install oauth2client``)
+
     """
 
     scopes = ['https://www.googleapis.com/auth/calendar.readonly']
diff --git a/platypush/plugins/google/calendar/manifest.yaml b/platypush/plugins/google/calendar/manifest.yaml
new file mode 100644
index 00000000..f73f0f58
--- /dev/null
+++ b/platypush/plugins/google/calendar/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - google-api-python-client
+    - oauth2client
+  package: platypush.plugins.google.calendar
+  type: plugin
diff --git a/platypush/plugins/google/drive.py b/platypush/plugins/google/drive/__init__.py
similarity index 98%
rename from platypush/plugins/google/drive.py
rename to platypush/plugins/google/drive/__init__.py
index 76736a5d..959e4830 100644
--- a/platypush/plugins/google/drive.py
+++ b/platypush/plugins/google/drive/__init__.py
@@ -10,6 +10,12 @@ from platypush.message.response.google.drive import GoogleDriveFile
 class GoogleDrivePlugin(GooglePlugin):
     """
     Google Drive plugin.
+
+    Requires:
+
+        * **google-api-python-client** (``pip install google-api-python-client``)
+        * **oauth2client** (``pip install oauth2client``)
+
     """
 
     scopes = ['https://www.googleapis.com/auth/drive',
diff --git a/platypush/plugins/google/drive/manifest.yaml b/platypush/plugins/google/drive/manifest.yaml
new file mode 100644
index 00000000..13fc150f
--- /dev/null
+++ b/platypush/plugins/google/drive/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - google-api-python-client
+    - oauth2client
+  package: platypush.plugins.google.drive
+  type: plugin
diff --git a/platypush/plugins/google/fit.py b/platypush/plugins/google/fit/__init__.py
similarity index 90%
rename from platypush/plugins/google/fit.py
rename to platypush/plugins/google/fit/__init__.py
index df0165b8..ec66ffcc 100644
--- a/platypush/plugins/google/fit.py
+++ b/platypush/plugins/google/fit/__init__.py
@@ -4,7 +4,13 @@ from platypush.plugins.google import GooglePlugin
 
 class GoogleFitPlugin(GooglePlugin):
     """
-    Google Fit plugin
+    Google Fit plugin.
+
+    Requires:
+
+        * **google-api-python-client** (``pip install google-api-python-client``)
+        * **oauth2client** (``pip install oauth2client``)
+
     """
 
     scopes = ['https://www.googleapis.com/auth/fitness.activity.read',
@@ -44,6 +50,8 @@ class GoogleFitPlugin(GooglePlugin):
 
         :param data_source_id: Data source ID, see `get_data_sources`
         :type data_source_id: str
+        :param user_id: Target user ID (default: configured user).
+        :param limit: Maximum number of items to return.
         """
 
         service = self.get_service(service='fitness', version='v1')
diff --git a/platypush/plugins/google/fit/manifest.yaml b/platypush/plugins/google/fit/manifest.yaml
new file mode 100644
index 00000000..abd723ff
--- /dev/null
+++ b/platypush/plugins/google/fit/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - google-api-python-client
+    - oauth2client
+  package: platypush.plugins.google.fit
+  type: plugin
diff --git a/platypush/plugins/google/mail.py b/platypush/plugins/google/mail/__init__.py
similarity index 95%
rename from platypush/plugins/google/mail.py
rename to platypush/plugins/google/mail/__init__.py
index d713138e..750839a3 100644
--- a/platypush/plugins/google/mail.py
+++ b/platypush/plugins/google/mail/__init__.py
@@ -21,6 +21,12 @@ from platypush.plugins.google import GooglePlugin
 class GoogleMailPlugin(GooglePlugin):
     """
     GMail plugin. It allows you to programmatically compose and (TODO) get emails
+
+    Requires:
+
+        * **google-api-python-client** (``pip install google-api-python-client``)
+        * **oauth2client** (``pip install oauth2client``)
+
     """
 
     scopes = ['https://www.googleapis.com/auth/gmail.modify']
diff --git a/platypush/plugins/google/mail/manifest.yaml b/platypush/plugins/google/mail/manifest.yaml
new file mode 100644
index 00000000..fe047290
--- /dev/null
+++ b/platypush/plugins/google/mail/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - google-api-python-client
+    - oauth2client
+  package: platypush.plugins.google.mail
+  type: plugin
diff --git a/platypush/plugins/google/maps.py b/platypush/plugins/google/maps/__init__.py
similarity index 95%
rename from platypush/plugins/google/maps.py
rename to platypush/plugins/google/maps/__init__.py
index b2e8750d..4eec5de8 100644
--- a/platypush/plugins/google/maps.py
+++ b/platypush/plugins/google/maps/__init__.py
@@ -11,6 +11,12 @@ from platypush.plugins.google import GooglePlugin
 class GoogleMapsPlugin(GooglePlugin):
     """
     Plugins that provides utilities to interact with Google Maps API services.
+
+    Requires:
+
+        * **google-api-python-client** (``pip install google-api-python-client``)
+        * **oauth2client** (``pip install oauth2client``)
+
     """
 
     scopes = []
diff --git a/platypush/plugins/google/maps/manifest.yaml b/platypush/plugins/google/maps/manifest.yaml
new file mode 100644
index 00000000..227a36ec
--- /dev/null
+++ b/platypush/plugins/google/maps/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - google-api-python-client
+    - oauth2client
+  package: platypush.plugins.google.maps
+  type: plugin
diff --git a/platypush/plugins/google/pubsub.py b/platypush/plugins/google/pubsub/__init__.py
similarity index 96%
rename from platypush/plugins/google/pubsub.py
rename to platypush/plugins/google/pubsub/__init__.py
index cfe3746b..1f752113 100644
--- a/platypush/plugins/google/pubsub.py
+++ b/platypush/plugins/google/pubsub/__init__.py
@@ -21,8 +21,11 @@ class GooglePubsubPlugin(Plugin):
 
     Requires:
 
+        * **google-api-python-client** (``pip install google-api-python-client``)
+        * **oauth2client** (``pip install oauth2client``)
         * **google-cloud-pubsub** (``pip install google-cloud-pubsub``)
 
+
     """
 
     publisher_audience = 'https://pubsub.googleapis.com/google.pubsub.v1.Publisher'
diff --git a/platypush/plugins/google/pubsub/manifest.yaml b/platypush/plugins/google/pubsub/manifest.yaml
new file mode 100644
index 00000000..569b3c9c
--- /dev/null
+++ b/platypush/plugins/google/pubsub/manifest.yaml
@@ -0,0 +1,9 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - google-api-python-client
+    - oauth2client
+    - google-cloud-pubsub
+  package: platypush.plugins.google.pubsub
+  type: plugin
diff --git a/platypush/plugins/google/translate.py b/platypush/plugins/google/translate/__init__.py
similarity index 97%
rename from platypush/plugins/google/translate.py
rename to platypush/plugins/google/translate/__init__.py
index 339a080b..28d173a2 100644
--- a/platypush/plugins/google/translate.py
+++ b/platypush/plugins/google/translate/__init__.py
@@ -26,6 +26,8 @@ class GoogleTranslatePlugin(Plugin):
 
     Requires:
 
+        * **google-api-python-client** (``pip install google-api-python-client``)
+        * **oauth2client** (``pip install oauth2client``)
         * **google-cloud-translate** (``pip install google-cloud-translate``)
 
     """
diff --git a/platypush/plugins/google/translate/manifest.yaml b/platypush/plugins/google/translate/manifest.yaml
new file mode 100644
index 00000000..561878ca
--- /dev/null
+++ b/platypush/plugins/google/translate/manifest.yaml
@@ -0,0 +1,9 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - google-api-python-client
+    - oauth2client
+    - google-cloud-translate
+  package: platypush.plugins.google.translate
+  type: plugin
diff --git a/platypush/plugins/google/youtube.py b/platypush/plugins/google/youtube/__init__.py
similarity index 93%
rename from platypush/plugins/google/youtube.py
rename to platypush/plugins/google/youtube/__init__.py
index 2500dc6b..03cb8cdb 100644
--- a/platypush/plugins/google/youtube.py
+++ b/platypush/plugins/google/youtube/__init__.py
@@ -8,7 +8,13 @@ from platypush.plugins.google import GooglePlugin
 
 class GoogleYoutubePlugin(GooglePlugin):
     """
-    YouTube plugin
+    YouTube plugin.
+
+    Requires:
+
+        * **google-api-python-client** (``pip install google-api-python-client``)
+        * **oauth2client** (``pip install oauth2client``)
+
     """
 
     scopes = ['https://www.googleapis.com/auth/youtube.readonly']
diff --git a/platypush/plugins/google/youtube/manifest.yaml b/platypush/plugins/google/youtube/manifest.yaml
new file mode 100644
index 00000000..a08ca8f5
--- /dev/null
+++ b/platypush/plugins/google/youtube/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - google-api-python-client
+    - oauth2client
+  package: platypush.plugins.google.youtube
+  type: plugin
diff --git a/platypush/plugins/gpio/__init__.py b/platypush/plugins/gpio/__init__.py
index cd20baeb..e4bddbc5 100644
--- a/platypush/plugins/gpio/__init__.py
+++ b/platypush/plugins/gpio/__init__.py
@@ -13,7 +13,8 @@ class GpioPlugin(Plugin):
     Plugin to handle raw read/write operation on the Raspberry Pi GPIO pins.
 
     Requires:
-        * **RPi.GPIO** (`pip install RPi.GPIO`)
+
+        * **RPi.GPIO** (``pip install RPi.GPIO``)
     """
 
     def __init__(self, pins: Optional[Dict[str, int]] = None, mode: str = 'board', **kwargs):
diff --git a/platypush/plugins/gpio/manifest.yaml b/platypush/plugins/gpio/manifest.yaml
new file mode 100644
index 00000000..49d157e5
--- /dev/null
+++ b/platypush/plugins/gpio/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - RPi.GPIO
+  package: platypush.plugins.gpio
+  type: plugin
diff --git a/platypush/plugins/gpio/sensor/__init__.py b/platypush/plugins/gpio/sensor/__init__.py
index 3bf82ee0..0d0c81a2 100644
--- a/platypush/plugins/gpio/sensor/__init__.py
+++ b/platypush/plugins/gpio/sensor/__init__.py
@@ -3,7 +3,7 @@ from abc import ABC
 from platypush.plugins.sensor import SensorPlugin
 
 
-class GpioSensorPlugin(ABC, SensorPlugin):
+class GpioSensorPlugin(SensorPlugin, ABC):
     pass
 
 
diff --git a/platypush/plugins/gpio/sensor/accelerometer/__init__.py b/platypush/plugins/gpio/sensor/accelerometer/__init__.py
index cb4b4bd2..acfb5e81 100644
--- a/platypush/plugins/gpio/sensor/accelerometer/__init__.py
+++ b/platypush/plugins/gpio/sensor/accelerometer/__init__.py
@@ -10,10 +10,10 @@ class GpioSensorAccelerometerPlugin(GpioSensorPlugin):
 
     Requires:
 
-        * ``Adafruit_Python_GPIO`` (``pip install Adafruit_Python_GPIO``)
+        * ``Adafruit-GPIO`` (``pip install Adafruit-GPIO``)
     """
 
-    def __init__(self, g=4, precision=None, *args, **kwargs):
+    def __init__(self, g=4, precision=None, **kwargs):
         """
         Only LIS3DH in I2C mode is currently supported: https://learn.adafruit.com/assets/59080.
 
@@ -25,7 +25,7 @@ class GpioSensorAccelerometerPlugin(GpioSensorPlugin):
         :type precision: int
         """
 
-        super().__init__(*args, **kwargs)
+        super().__init__(**kwargs)
         from platypush.plugins.gpio.sensor.accelerometer.lib.LIS3DH import LIS3DH
 
         if g == 2:
diff --git a/platypush/plugins/gpio/sensor/accelerometer/lib/LIS3DH.py b/platypush/plugins/gpio/sensor/accelerometer/lib/LIS3DH.py
index 420caca0..e850e93a 100644
--- a/platypush/plugins/gpio/sensor/accelerometer/lib/LIS3DH.py
+++ b/platypush/plugins/gpio/sensor/accelerometer/lib/LIS3DH.py
@@ -12,7 +12,7 @@ Version 1.2 - 21/01/18 (holzfigure) Using new Adafruit library Adafruit_GPIO;
                                     Replacing variable name "range"
                                       (which is a keyword) with "g-range";
 
-Requires the Adafruit_Python_GPIO library
+Requires the Adafruit-GPIO library
 https://github.com/adafruit/Adafruit_Python_GPIO
 
 Inspiration and assistance from:
diff --git a/platypush/plugins/gpio/sensor/accelerometer/manifest.yaml b/platypush/plugins/gpio/sensor/accelerometer/manifest.yaml
new file mode 100644
index 00000000..0e88bcd9
--- /dev/null
+++ b/platypush/plugins/gpio/sensor/accelerometer/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - Adafruit-GPIO
+  package: platypush.plugins.gpio.sensor.accelerometer
+  type: plugin
diff --git a/platypush/plugins/gpio/sensor/bme280.py b/platypush/plugins/gpio/sensor/bme280/__init__.py
similarity index 100%
rename from platypush/plugins/gpio/sensor/bme280.py
rename to platypush/plugins/gpio/sensor/bme280/__init__.py
diff --git a/platypush/plugins/gpio/sensor/bme280/manifest.yaml b/platypush/plugins/gpio/sensor/bme280/manifest.yaml
new file mode 100644
index 00000000..ad8a2fb6
--- /dev/null
+++ b/platypush/plugins/gpio/sensor/bme280/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pimoroni-bme280
+  package: platypush.plugins.gpio.sensor.bme280
+  type: plugin
diff --git a/platypush/plugins/gpio/sensor/dht.py b/platypush/plugins/gpio/sensor/dht/__init__.py
similarity index 98%
rename from platypush/plugins/gpio/sensor/dht.py
rename to platypush/plugins/gpio/sensor/dht/__init__.py
index ca163426..7f59541b 100644
--- a/platypush/plugins/gpio/sensor/dht.py
+++ b/platypush/plugins/gpio/sensor/dht/__init__.py
@@ -39,8 +39,7 @@ class GpioSensorDhtPlugin(GpioSensorPlugin):
 
     @action
     def read(self, sensor_type: Optional[str] = None, pin: Optional[int] = None,
-             retries: Optional[int] = None, retry_seconds: Optional[int] = None,
-             **kwargs) -> Dict[str, float]:
+             retries: Optional[int] = None, retry_seconds: Optional[int] = None, **__) -> Dict[str, float]:
         """
         Read data from the sensor.
 
diff --git a/platypush/plugins/gpio/sensor/dht/manifest.yaml b/platypush/plugins/gpio/sensor/dht/manifest.yaml
new file mode 100644
index 00000000..cecb1984
--- /dev/null
+++ b/platypush/plugins/gpio/sensor/dht/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - Adafruit_Python_DHT
+  package: platypush.plugins.gpio.sensor.dht
+  type: plugin
diff --git a/platypush/plugins/gpio/sensor/distance/manifest.yaml b/platypush/plugins/gpio/sensor/distance/manifest.yaml
new file mode 100644
index 00000000..3b739987
--- /dev/null
+++ b/platypush/plugins/gpio/sensor/distance/manifest.yaml
@@ -0,0 +1,9 @@
+manifest:
+  events:
+    platypush.message.event.distance.DistanceSensorEvent: when a new distance measurement
+      is available
+  install:
+    pip:
+    - RPi.GPIO
+  package: platypush.plugins.gpio.sensor.distance
+  type: plugin
diff --git a/platypush/plugins/gpio/sensor/distance/vl53l1x.py b/platypush/plugins/gpio/sensor/distance/vl53l1x/__init__.py
similarity index 100%
rename from platypush/plugins/gpio/sensor/distance/vl53l1x.py
rename to platypush/plugins/gpio/sensor/distance/vl53l1x/__init__.py
diff --git a/platypush/plugins/gpio/sensor/distance/vl53l1x/manifest.yaml b/platypush/plugins/gpio/sensor/distance/vl53l1x/manifest.yaml
new file mode 100644
index 00000000..ed530f87
--- /dev/null
+++ b/platypush/plugins/gpio/sensor/distance/vl53l1x/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: []
+  install:
+    pip:
+    - smbus2
+    - vl53l1x
+  package: platypush.plugins.gpio.sensor.distance.vl53l1x
+  type: plugin
diff --git a/platypush/plugins/gpio/sensor/envirophat.py b/platypush/plugins/gpio/sensor/envirophat/__init__.py
similarity index 100%
rename from platypush/plugins/gpio/sensor/envirophat.py
rename to platypush/plugins/gpio/sensor/envirophat/__init__.py
diff --git a/platypush/plugins/gpio/sensor/envirophat/manifest.yaml b/platypush/plugins/gpio/sensor/envirophat/manifest.yaml
new file mode 100644
index 00000000..6793f4fc
--- /dev/null
+++ b/platypush/plugins/gpio/sensor/envirophat/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - envirophat
+  package: platypush.plugins.gpio.sensor.envirophat
+  type: plugin
diff --git a/platypush/plugins/gpio/sensor/ltr559.py b/platypush/plugins/gpio/sensor/ltr559/__init__.py
similarity index 100%
rename from platypush/plugins/gpio/sensor/ltr559.py
rename to platypush/plugins/gpio/sensor/ltr559/__init__.py
diff --git a/platypush/plugins/gpio/sensor/ltr559/manifest.yaml b/platypush/plugins/gpio/sensor/ltr559/manifest.yaml
new file mode 100644
index 00000000..28740526
--- /dev/null
+++ b/platypush/plugins/gpio/sensor/ltr559/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - ltr559
+  package: platypush.plugins.gpio.sensor.ltr559
+  type: plugin
diff --git a/platypush/plugins/gpio/sensor/mcp3008/manifest.yaml b/platypush/plugins/gpio/sensor/mcp3008/manifest.yaml
new file mode 100644
index 00000000..e709c272
--- /dev/null
+++ b/platypush/plugins/gpio/sensor/mcp3008/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - adafruit-mcp3008
+  package: platypush.plugins.gpio.sensor.mcp3008
+  type: plugin
diff --git a/platypush/plugins/gpio/sensor/motion/pwm3901.py b/platypush/plugins/gpio/sensor/motion/pmw3901/__init__.py
similarity index 95%
rename from platypush/plugins/gpio/sensor/motion/pwm3901.py
rename to platypush/plugins/gpio/sensor/motion/pmw3901/__init__.py
index dbee7b86..79987b7c 100644
--- a/platypush/plugins/gpio/sensor/motion/pwm3901.py
+++ b/platypush/plugins/gpio/sensor/motion/pmw3901/__init__.py
@@ -18,14 +18,14 @@ class SPISlot(enum.Enum):
     BACK = 'back'
 
 
-class GpioSensorMotionPwm3901Plugin(GpioSensorPlugin):
+class GpioSensorMotionPmw3901Plugin(GpioSensorPlugin):
     """
-    Plugin to interact with an `PWM3901 <https://github.com/pimoroni/pmw3901-python>`_
+    Plugin to interact with an `PMW3901 <https://github.com/pimoroni/pmw3901-python>`_
     optical flow and motion sensor
 
     Requires:
 
-        * ``pwm3901`` (``pip install pwm3901``)
+        * ``pmw3901`` (``pip install pmw3901``)
     """
 
     def __init__(self, rotation=Rotation.ROTATE_0.value, spi_slot=SPISlot.FRONT.value, spi_port=0, **kwargs):
diff --git a/platypush/plugins/gpio/sensor/motion/pmw3901/manifest.yaml b/platypush/plugins/gpio/sensor/motion/pmw3901/manifest.yaml
new file mode 100644
index 00000000..5597dddd
--- /dev/null
+++ b/platypush/plugins/gpio/sensor/motion/pmw3901/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pmw3901
+  package: platypush.plugins.gpio.sensor.motion.pmw3901
+  type: plugin
diff --git a/platypush/plugins/gpio/zeroborg/lib/__init__.py b/platypush/plugins/gpio/zeroborg/lib/__init__.py
index 740ca314..4b5567f0 100644
--- a/platypush/plugins/gpio/zeroborg/lib/__init__.py
+++ b/platypush/plugins/gpio/zeroborg/lib/__init__.py
@@ -354,7 +354,7 @@ the current busNumber.
                     'drivers are running?')
                 self.bus = None
         else:
-            self.Print('ZeroBorg loaded on bus %d' % (self.busNumber))
+            self.Print('ZeroBorg loaded on bus %d' % self.busNumber)
 
     def SetMotor1(self, power):
         """
diff --git a/platypush/plugins/gpio/zeroborg/manifest.yaml b/platypush/plugins/gpio/zeroborg/manifest.yaml
new file mode 100644
index 00000000..0feb9454
--- /dev/null
+++ b/platypush/plugins/gpio/zeroborg/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.zeroborg.ZeroborgDriveEvent: when motors direction changes
+    platypush.message.event.zeroborg.ZeroborgStopEvent: upon motors stop
+  install:
+    pip: []
+  package: platypush.plugins.gpio.zeroborg
+  type: plugin
diff --git a/platypush/plugins/graphite.py b/platypush/plugins/graphite/__init__.py
similarity index 97%
rename from platypush/plugins/graphite.py
rename to platypush/plugins/graphite/__init__.py
index 943989ee..7d06892e 100644
--- a/platypush/plugins/graphite.py
+++ b/platypush/plugins/graphite/__init__.py
@@ -36,6 +36,7 @@ class GraphitePlugin(Plugin):
         :param value: Value to be sent.
         :param host: Graphite host (default: default configured ``host``).
         :param port: Graphite port (default: default configured ``port``).
+        :param timeout: Timeout in seconds.
         :param tags: Map of tags for the metric.
         :param prefix: Metric prefix name (default: empty string).
         :param protocol: Communication protocol - possible values: 'tcp', 'udp' (default: 'tcp').
diff --git a/platypush/plugins/graphite/manifest.yaml b/platypush/plugins/graphite/manifest.yaml
new file mode 100644
index 00000000..e1bfd956
--- /dev/null
+++ b/platypush/plugins/graphite/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.graphite
+  type: plugin
diff --git a/platypush/plugins/homeseer.py b/platypush/plugins/homeseer.py
deleted file mode 100644
index 8d6e3d7d..00000000
--- a/platypush/plugins/homeseer.py
+++ /dev/null
@@ -1,101 +0,0 @@
-
-from platypush.plugins import Plugin, action
-
-
-class HomeseerPlugin(Plugin):
-    """
-    This plugin allows you interact with an existing HomeSeer setup,
-    query and control connected devices.
-
-    Requires:
-
-        * **pyhomeseer** (``pip install git+https://github.com/legrego/PyHomeSeer``)
-    """
-
-    def __init__(self, host, username=None, password=None, *args, **kwargs):
-        """
-        :param host: IP or hostname of your HomeSeer hub
-        :type host: str
-
-        :param username: HomeSeer username
-        :type username: str
-
-        :param password: HomeSeer password
-        :type password: str
-        """
-
-        super().__init__(*args, **kwargs)
-
-        self.host = host
-        self.username = username
-        self.password = password
-        self._client = None
-
-    def _get_client(self):
-        from pyhomeseer.homeseer_client import HomeSeerClient
-
-        if not self._client:
-            self._client = HomeSeerClient(host=self.host,
-                                          username=self.username,
-                                          password=self.password)
-
-        return self._client
-
-
-    @action
-    def query_devices(self, ref=None, location=None):
-        """
-        Get a list of devices connected to HomeSeer with their status
-
-        :param ref: Device reference. If not set, all the devices will be queried
-        :type ref: int
-
-        :param location: Device location. If not set, all the devices will be queried
-        :type location: str
-        """
-
-        client = self._get_client()
-
-        if ref is not None:
-            devices = client.get_devices(ref=ref)
-        elif location is not None:
-            devices = client.get_devices(location=location)
-        else:
-            devices = client.get_devices()
-
-        return [
-            {
-                attr: getattr(dev, attr)
-                for attr in ['ref','name','location','value','status']
-            }
-            for dev in devices
-        ]
-
-
-    @action
-    def control(self, ref, value=None, label=None):
-        """
-        Control a HomeSeer connected device.
-
-        :param ref: Device reference
-        :type ref: int
-
-        :param value: If set, then control the device with this specific int value
-        :type value: int
-
-        :param label: If set, then control the device with this specific label
-            (e.g. 'On' or 'Off')
-        :type label: str
-        """
-
-        if value is None and label is None:
-            raise RuntimeError('Please specify either value or label')
-
-        client = self._get_client()
-
-        if value is not None:
-            return client.control(ref=ref, value=value)
-        return client.control(ref=ref, label=label)
-
-
-# vim:sw=4:ts=4:et:
diff --git a/platypush/plugins/http/request/__init__.py b/platypush/plugins/http/request/__init__.py
index 89d911d5..3384259e 100644
--- a/platypush/plugins/http/request/__init__.py
+++ b/platypush/plugins/http/request/__init__.py
@@ -12,10 +12,6 @@ class HttpRequestPlugin(Plugin):
     """
     Plugin for executing custom HTTP requests.
 
-    Requires:
-
-        * **requests** (``pip install requests``)
-
     Some example usages::
 
         # Execute a GET request on a JSON endpoint
@@ -84,7 +80,7 @@ class HttpRequestPlugin(Plugin):
 
         :param kwargs: Additional arguments that will be transparently provided to the ``requests`` object, including
             but not limited to query params, data, JSON, headers etc.
-            (see http://docs.python-requests.org/en/master/user/quickstart/#make-a-request)
+            (see https://docs.python-requests.org/en/master/user/quickstart/#make-a-request)
         :type kwargs: dict
         """
 
@@ -100,7 +96,7 @@ class HttpRequestPlugin(Plugin):
 
         :param kwargs: Additional arguments that will be transparently provided to the ``requests`` object, including
             but not limited to query params, data, JSON, headers etc.
-            (see http://docs.python-requests.org/en/master/user/quickstart/#make-a-request)
+            (see https://docs.python-requests.org/en/master/user/quickstart/#make-a-request)
         :type kwargs: dict
         """
 
@@ -116,7 +112,7 @@ class HttpRequestPlugin(Plugin):
 
         :param kwargs: Additional arguments that will be transparently provided to the ``requests`` object, including
             but not limited to query params, data, JSON, headers etc.
-            (see http://docs.python-requests.org/en/master/user/quickstart/#make-a-request)
+            (see https://docs.python-requests.org/en/master/user/quickstart/#make-a-request)
         :type kwargs: dict
         """
 
@@ -132,7 +128,7 @@ class HttpRequestPlugin(Plugin):
 
         :param kwargs: Additional arguments that will be transparently provided to the ``requests`` object, including
             but not limited to query params, data, JSON, headers etc.
-            (see http://docs.python-requests.org/en/master/user/quickstart/#make-a-request)
+            (see https://docs.python-requests.org/en/master/user/quickstart/#make-a-request)
         :type kwargs: dict
         """
 
@@ -148,7 +144,7 @@ class HttpRequestPlugin(Plugin):
 
         :param kwargs: Additional arguments that will be transparently provided to the ``requests`` object, including
             but not limited to query params, data, JSON, headers etc.
-            (see http://docs.python-requests.org/en/master/user/quickstart/#make-a-request)
+            (see https://docs.python-requests.org/en/master/user/quickstart/#make-a-request)
         :type kwargs: dict
         """
 
@@ -164,7 +160,7 @@ class HttpRequestPlugin(Plugin):
 
         :param kwargs: Additional arguments that will be transparently provided to the ``requests`` object, including
             but not limited to query params, data, JSON, headers etc.
-            (see http://docs.python-requests.org/en/master/user/quickstart/#make-a-request)
+            (see https://docs.python-requests.org/en/master/user/quickstart/#make-a-request)
         :type kwargs: dict
         """
 
diff --git a/platypush/plugins/http/request/manifest.yaml b/platypush/plugins/http/request/manifest.yaml
new file mode 100644
index 00000000..b37744cc
--- /dev/null
+++ b/platypush/plugins/http/request/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.http.request
+  type: plugin
diff --git a/platypush/plugins/http/request/rss.py b/platypush/plugins/http/request/rss/__init__.py
similarity index 100%
rename from platypush/plugins/http/request/rss.py
rename to platypush/plugins/http/request/rss/__init__.py
diff --git a/platypush/plugins/http/request/rss/manifest.yaml b/platypush/plugins/http/request/rss/manifest.yaml
new file mode 100644
index 00000000..e16ae74e
--- /dev/null
+++ b/platypush/plugins/http/request/rss/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - feedparser
+  package: platypush.plugins.http.request.rss
+  type: plugin
diff --git a/platypush/plugins/http/webpage/__init__.py b/platypush/plugins/http/webpage/__init__.py
index 2626202f..59d20118 100644
--- a/platypush/plugins/http/webpage/__init__.py
+++ b/platypush/plugins/http/webpage/__init__.py
@@ -16,10 +16,10 @@ class HttpWebpagePlugin(Plugin):
 
     Requires:
 
-        * **requests** (``pip install requests``)
         * **weasyprint** (``pip install weasyprint``), optional, for HTML->PDF conversion
         * **node** and **npm** installed on your system (to use the mercury-parser interface)
         * The mercury-parser library installed (``npm install @postlight/mercury-parser``)
+
     """
 
     _mercury_script = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'mercury-parser.js')
@@ -114,7 +114,10 @@ class HttpWebpagePlugin(Plugin):
 
         if outfile.lower().endswith('.pdf'):
             import weasyprint
-            from weasyprint.fonts import FontConfiguration
+            try:
+                from weasyprint.fonts import FontConfiguration
+            except ImportError:
+                from weasyprint.document import FontConfiguration
 
             font_config = FontConfiguration()
             css = [weasyprint.CSS('https://fonts.googleapis.com/css?family=Merriweather'),
diff --git a/platypush/plugins/http/webpage/manifest.yaml b/platypush/plugins/http/webpage/manifest.yaml
new file mode 100644
index 00000000..9badd0af
--- /dev/null
+++ b/platypush/plugins/http/webpage/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - weasyprint
+  package: platypush.plugins.http.webpage
+  type: plugin
diff --git a/platypush/plugins/ifttt.py b/platypush/plugins/ifttt/__init__.py
similarity index 96%
rename from platypush/plugins/ifttt.py
rename to platypush/plugins/ifttt/__init__.py
index 571ddb9b..313b26f7 100644
--- a/platypush/plugins/ifttt.py
+++ b/platypush/plugins/ifttt/__init__.py
@@ -12,10 +12,6 @@ class IftttPlugin(Plugin):
     any action not natively supported by Platypush but available on your IFTTT
     configuration.
 
-    Requires:
-
-        * **requests** (``pip install requests``)
-
     An example::
 
         # Trigger an IFTTT event named "at_home"
diff --git a/platypush/plugins/ifttt/manifest.yaml b/platypush/plugins/ifttt/manifest.yaml
new file mode 100644
index 00000000..49fd3a97
--- /dev/null
+++ b/platypush/plugins/ifttt/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.ifttt
+  type: plugin
diff --git a/platypush/plugins/inputs.py b/platypush/plugins/inputs/__init__.py
similarity index 100%
rename from platypush/plugins/inputs.py
rename to platypush/plugins/inputs/__init__.py
diff --git a/platypush/plugins/inputs/manifest.yaml b/platypush/plugins/inputs/manifest.yaml
new file mode 100644
index 00000000..332f693f
--- /dev/null
+++ b/platypush/plugins/inputs/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pyuserinput
+  package: platypush.plugins.inputs
+  type: plugin
diff --git a/platypush/plugins/inspect.py b/platypush/plugins/inspect/__init__.py
similarity index 100%
rename from platypush/plugins/inspect.py
rename to platypush/plugins/inspect/__init__.py
diff --git a/platypush/plugins/inspect/manifest.yaml b/platypush/plugins/inspect/manifest.yaml
new file mode 100644
index 00000000..42352b97
--- /dev/null
+++ b/platypush/plugins/inspect/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - docutils
+  package: platypush.plugins.inspect
+  type: plugin
diff --git a/platypush/plugins/kafka.py b/platypush/plugins/kafka/__init__.py
similarity index 100%
rename from platypush/plugins/kafka.py
rename to platypush/plugins/kafka/__init__.py
diff --git a/platypush/plugins/kafka/manifest.yaml b/platypush/plugins/kafka/manifest.yaml
new file mode 100644
index 00000000..31134fcb
--- /dev/null
+++ b/platypush/plugins/kafka/manifest.yaml
@@ -0,0 +1,9 @@
+manifest:
+  events:
+    platypush.message.event.kafka.KafkaMessageEvent: when a new message is received
+      on the consumer topic.
+  install:
+    pip:
+    - kafka
+  package: platypush.plugins.kafka
+  type: plugin
diff --git a/platypush/plugins/lastfm/__init__.py b/platypush/plugins/lastfm/__init__.py
index 1305cc27..a4323024 100644
--- a/platypush/plugins/lastfm/__init__.py
+++ b/platypush/plugins/lastfm/__init__.py
@@ -2,6 +2,7 @@ import time
 
 from platypush.plugins import Plugin, action
 
+
 class LastfmPlugin(Plugin):
     """
     Plugin to interact with your Last.FM (https://last.fm) account, update your
@@ -36,14 +37,13 @@ class LastfmPlugin(Plugin):
         self.password = password
 
         self.lastfm = pylast.LastFMNetwork(
-            api_key = self.api_key,
-            api_secret = self.api_secret,
-            username = self.username,
-            password_hash = pylast.md5(self.password))
-
+            api_key=self.api_key,
+            api_secret=self.api_secret,
+            username=self.username,
+            password_hash=pylast.md5(self.password))
 
     @action
-    def scrobble(self, artist, title, album=None, **kwargs):
+    def scrobble(self, artist, title, album=None):
         """
         Scrobble a track to Last.FM
 
@@ -56,15 +56,14 @@ class LastfmPlugin(Plugin):
         """
 
         self.lastfm.scrobble(
-            artist = artist,
-            title = title,
-            album = album,
-            timestamp = int(time.time()),
+            artist=artist,
+            title=title,
+            album=album,
+            timestamp=int(time.time()),
         )
 
-
     @action
-    def update_now_playing(self, artist, title, album=None, **kwargs):
+    def update_now_playing(self, artist, title, album=None):
         """
         Update the currently playing track
 
@@ -77,11 +76,9 @@ class LastfmPlugin(Plugin):
         """
 
         self.lastfm.update_now_playing(
-            artist = artist,
-            title = title,
-            album = album,
+            artist=artist,
+            title=title,
+            album=album,
         )
 
-
 # vim:sw=4:ts=4:et:
-
diff --git a/platypush/plugins/lastfm/manifest.yaml b/platypush/plugins/lastfm/manifest.yaml
new file mode 100644
index 00000000..ef01bc83
--- /dev/null
+++ b/platypush/plugins/lastfm/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pylast
+  package: platypush.plugins.lastfm
+  type: plugin
diff --git a/platypush/plugins/lcd/gpio.py b/platypush/plugins/lcd/gpio/__init__.py
similarity index 100%
rename from platypush/plugins/lcd/gpio.py
rename to platypush/plugins/lcd/gpio/__init__.py
diff --git a/platypush/plugins/lcd/gpio/manifest.yaml b/platypush/plugins/lcd/gpio/manifest.yaml
new file mode 100644
index 00000000..30deaa44
--- /dev/null
+++ b/platypush/plugins/lcd/gpio/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - RPLCD
+    - RPi.GPIO
+  package: platypush.plugins.lcd.gpio
+  type: plugin
diff --git a/platypush/plugins/lcd/i2c.py b/platypush/plugins/lcd/i2c/__init__.py
similarity index 98%
rename from platypush/plugins/lcd/i2c.py
rename to platypush/plugins/lcd/i2c/__init__.py
index eb9d3822..92fa03e6 100644
--- a/platypush/plugins/lcd/i2c.py
+++ b/platypush/plugins/lcd/i2c/__init__.py
@@ -73,4 +73,8 @@ class LcdI2cPlugin(LcdPlugin):
                        auto_linebreaks=self.auto_linebreaks)
 
 
+class LcdI2CPlugin(LcdI2cPlugin):
+    pass
+
+
 # vim:sw=4:ts=4:et:
diff --git a/platypush/plugins/lcd/i2c/manifest.yaml b/platypush/plugins/lcd/i2c/manifest.yaml
new file mode 100644
index 00000000..e8d0e86b
--- /dev/null
+++ b/platypush/plugins/lcd/i2c/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - RPLCD
+    - RPi.GPIO
+  package: platypush.plugins.lcd.i2c
+  type: plugin
diff --git a/platypush/plugins/light/__init__.py b/platypush/plugins/light/__init__.py
index 369d77cd..3943924d 100644
--- a/platypush/plugins/light/__init__.py
+++ b/platypush/plugins/light/__init__.py
@@ -1,4 +1,4 @@
-from abc import ABC
+from abc import ABC, abstractmethod
 
 from platypush.plugins import action
 from platypush.plugins.switch import SwitchPlugin
@@ -10,16 +10,19 @@ class LightPlugin(SwitchPlugin, ABC):
     """
 
     @action
+    @abstractmethod
     def on(self):
         """ Turn the light on """
         raise NotImplementedError()
 
     @action
+    @abstractmethod
     def off(self):
         """ Turn the light off """
         raise NotImplementedError()
 
     @action
+    @abstractmethod
     def toggle(self):
         """ Toggle the light status (on/off) """
         raise NotImplementedError()
diff --git a/platypush/plugins/light/hue/manifest.yaml b/platypush/plugins/light/hue/manifest.yaml
new file mode 100644
index 00000000..cd18d519
--- /dev/null
+++ b/platypush/plugins/light/hue/manifest.yaml
@@ -0,0 +1,11 @@
+manifest:
+  events:
+    platypush.message.event.light.LightAnimationStartedEvent: when an animation is
+      started.
+    platypush.message.event.light.LightAnimationStoppedEvent: when an animation is
+      stopped.
+  install:
+    pip:
+    - phue
+  package: platypush.plugins.light.hue
+  type: plugin
diff --git a/platypush/plugins/linode.py b/platypush/plugins/linode/__init__.py
similarity index 100%
rename from platypush/plugins/linode.py
rename to platypush/plugins/linode/__init__.py
diff --git a/platypush/plugins/linode/manifest.yaml b/platypush/plugins/linode/manifest.yaml
new file mode 100644
index 00000000..2b2aa346
--- /dev/null
+++ b/platypush/plugins/linode/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - linode_api4
+  package: platypush.plugins.linode
+  type: plugin
diff --git a/platypush/plugins/logger.py b/platypush/plugins/logger/__init__.py
similarity index 100%
rename from platypush/plugins/logger.py
rename to platypush/plugins/logger/__init__.py
diff --git a/platypush/plugins/logger/manifest.yaml b/platypush/plugins/logger/manifest.yaml
new file mode 100644
index 00000000..87acf2a3
--- /dev/null
+++ b/platypush/plugins/logger/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.logger
+  type: plugin
diff --git a/platypush/plugins/luma/oled.py b/platypush/plugins/luma/oled/__init__.py
similarity index 99%
rename from platypush/plugins/luma/oled.py
rename to platypush/plugins/luma/oled/__init__.py
index cec30e5d..842e5afa 100644
--- a/platypush/plugins/luma/oled.py
+++ b/platypush/plugins/luma/oled/__init__.py
@@ -70,14 +70,14 @@ class LumaOledPlugin(Plugin):
         :param font: Path to a default TTF font used to display the text.
         :param font_size: Font size - it only applies if ``font`` is set.
         """
-        import luma.core.interface.serial
+        import luma.core.interface.serial as serial
         import luma.oled.device
         from luma.core.render import canvas
 
         super().__init__(**kwargs)
 
         iface_name = interface
-        interface = getattr(luma.core.interface.serial, DeviceInterface(interface).value)
+        interface = getattr(serial, DeviceInterface(interface).value)
 
         if iface_name == DeviceInterface.SPI.value:
             self.serial = interface(port=port, device=slot, cs_high=cs_high, gpio_DC=gpio_DC,
diff --git a/platypush/plugins/luma/oled/manifest.yaml b/platypush/plugins/luma/oled/manifest.yaml
new file mode 100644
index 00000000..662a3ae8
--- /dev/null
+++ b/platypush/plugins/luma/oled/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - luma.oled
+  package: platypush.plugins.luma.oled
+  type: plugin
diff --git a/platypush/plugins/mail/__init__.py b/platypush/plugins/mail/__init__.py
index 68681dcd..599da2f2 100644
--- a/platypush/plugins/mail/__init__.py
+++ b/platypush/plugins/mail/__init__.py
@@ -2,7 +2,6 @@ import inspect
 import os
 import subprocess
 
-from abc import ABC
 from dataclasses import dataclass
 from datetime import datetime
 from email.message import Message
@@ -62,7 +61,7 @@ class Mail(JSONAble):
         }
 
 
-class MailPlugin(Plugin, ABC):
+class MailPlugin(Plugin):
     """
     Base class for mail plugins.
     """
@@ -112,7 +111,7 @@ class MailPlugin(Plugin, ABC):
         return info
 
 
-class MailInPlugin(MailPlugin, ABC):
+class MailInPlugin(MailPlugin):
     """
     Base class for mail in plugins.
     """
@@ -141,7 +140,7 @@ class MailInPlugin(MailPlugin, ABC):
         raise NotImplementedError()
 
 
-class MailOutPlugin(MailPlugin, ABC):
+class MailOutPlugin(MailPlugin):
     """
     Base class for mail out plugins.
     """
diff --git a/platypush/plugins/mail/imap.py b/platypush/plugins/mail/imap/__init__.py
similarity index 100%
rename from platypush/plugins/mail/imap.py
rename to platypush/plugins/mail/imap/__init__.py
diff --git a/platypush/plugins/mail/imap/manifest.yaml b/platypush/plugins/mail/imap/manifest.yaml
new file mode 100644
index 00000000..87adccd6
--- /dev/null
+++ b/platypush/plugins/mail/imap/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - imapclient
+  package: platypush.plugins.mail.imap
+  type: plugin
diff --git a/platypush/plugins/mail/smtp.py b/platypush/plugins/mail/smtp/__init__.py
similarity index 100%
rename from platypush/plugins/mail/smtp.py
rename to platypush/plugins/mail/smtp/__init__.py
diff --git a/platypush/plugins/mail/smtp/manifest.yaml b/platypush/plugins/mail/smtp/manifest.yaml
new file mode 100644
index 00000000..baf0400b
--- /dev/null
+++ b/platypush/plugins/mail/smtp/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.mail.smtp
+  type: plugin
diff --git a/platypush/plugins/media/__init__.py b/platypush/plugins/media/__init__.py
index 0ff03713..b7ec992a 100644
--- a/platypush/plugins/media/__init__.py
+++ b/platypush/plugins/media/__init__.py
@@ -4,6 +4,7 @@ import os
 import queue
 import re
 import requests
+from abc import ABC, abstractmethod
 from typing import Optional, List, Dict, Union
 
 import subprocess
@@ -22,17 +23,17 @@ class PlayerState(enum.Enum):
     IDLE = 'idle'
 
 
-class MediaPlugin(Plugin):
+class MediaPlugin(Plugin, ABC):
     """
     Generic plugin to interact with a media player.
 
     Requires:
 
         * A media player installed (supported so far: mplayer, vlc, mpv, omxplayer, chromecast)
-        * **python-libtorrent** (``pip install python-libtorrent``), optional, for torrent support over native library
+        * **python-libtorrent-bin** (``pip install python-libtorrent-bin``), optional, for torrent support over native
+            library
         * *rtorrent* installed - optional, for torrent support over rtorrent
         * **youtube-dl** installed on your system (see your distro instructions), optional for YouTube support
-        * **requests** (``pip install requests``), optional, for local files over HTTP streaming supporting
         * **ffmpeg**,optional, to get media files metadata
 
     To start the local media stream service over HTTP you will also need the
@@ -218,34 +219,42 @@ class MediaPlugin(Plugin):
             self.logger.warning(f'Could not stop torrent plugin: {str(e)}')
 
     @action
+    @abstractmethod
     def play(self, resource, *args, **kwargs):
         raise self._NOT_IMPLEMENTED_ERR
 
     @action
+    @abstractmethod
     def pause(self, *args, **kwargs):
         raise self._NOT_IMPLEMENTED_ERR
 
     @action
+    @abstractmethod
     def stop(self, *args, **kwargs):
         raise self._NOT_IMPLEMENTED_ERR
 
     @action
+    @abstractmethod
     def quit(self, *args, **kwargs):
         raise self._NOT_IMPLEMENTED_ERR
 
     @action
+    @abstractmethod
     def voldown(self, *args, **kwargs):
         raise self._NOT_IMPLEMENTED_ERR
 
     @action
+    @abstractmethod
     def volup(self, *args, **kwargs):
         raise self._NOT_IMPLEMENTED_ERR
 
     @action
+    @abstractmethod
     def back(self, *args, **kwargs):
         raise self._NOT_IMPLEMENTED_ERR
 
     @action
+    @abstractmethod
     def forward(self, *args, **kwargs):
         raise self._NOT_IMPLEMENTED_ERR
 
@@ -259,42 +268,52 @@ class MediaPlugin(Plugin):
             return self.play(video)
 
     @action
+    @abstractmethod
     def toggle_subtitles(self, *args, **kwargs):
         raise self._NOT_IMPLEMENTED_ERR
 
     @action
+    @abstractmethod
     def set_subtitles(self, filename, *args, **kwargs):
         raise self._NOT_IMPLEMENTED_ERR
 
     @action
+    @abstractmethod
     def remove_subtitles(self, *args, **kwargs):
         raise self._NOT_IMPLEMENTED_ERR
 
     @action
+    @abstractmethod
     def is_playing(self, *args, **kwargs):
         raise self._NOT_IMPLEMENTED_ERR
 
     @action
+    @abstractmethod
     def load(self, resource, *args, **kwargs):
         raise self._NOT_IMPLEMENTED_ERR
 
     @action
+    @abstractmethod
     def mute(self, *args, **kwargs):
         raise self._NOT_IMPLEMENTED_ERR
 
     @action
+    @abstractmethod
     def seek(self, *args, **kwargs):
         raise self._NOT_IMPLEMENTED_ERR
 
     @action
+    @abstractmethod
     def set_position(self, *args, **kwargs):
         raise self._NOT_IMPLEMENTED_ERR
 
     @action
+    @abstractmethod
     def set_volume(self, volume):
         raise self._NOT_IMPLEMENTED_ERR
 
     @action
+    @abstractmethod
     def status(self):
         raise self._NOT_IMPLEMENTED_ERR
 
diff --git a/platypush/plugins/media/chromecast.py b/platypush/plugins/media/chromecast/__init__.py
similarity index 99%
rename from platypush/plugins/media/chromecast.py
rename to platypush/plugins/media/chromecast/__init__.py
index 5b290351..55268cf1 100644
--- a/platypush/plugins/media/chromecast.py
+++ b/platypush/plugins/media/chromecast/__init__.py
@@ -592,5 +592,11 @@ class MediaChromecastPlugin(MediaPlugin):
         cast.wait()
         return self.status(chromecast=chromecast)
 
+    def set_subtitles(self, filename, *args, **kwargs):
+        raise NotImplementedError
+
+    def remove_subtitles(self, *args, **kwargs):
+        raise NotImplementedError
+
 
 # vim:sw=4:ts=4:et:
diff --git a/platypush/plugins/media/chromecast/manifest.yaml b/platypush/plugins/media/chromecast/manifest.yaml
new file mode 100644
index 00000000..5e02465f
--- /dev/null
+++ b/platypush/plugins/media/chromecast/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pychromecast
+  package: platypush.plugins.media.chromecast
+  type: plugin
diff --git a/platypush/plugins/media/gstreamer/__init__.py b/platypush/plugins/media/gstreamer/__init__.py
index aee692b4..fcf79fbe 100644
--- a/platypush/plugins/media/gstreamer/__init__.py
+++ b/platypush/plugins/media/gstreamer/__init__.py
@@ -14,7 +14,15 @@ class MediaGstreamerPlugin(MediaPlugin):
 
     Requires:
 
-        * **gst-python** (``pip install gst-python``)
+        * **gst-python**
+
+    On Debian and derived systems:
+
+        * ``[sudo] apt-get install python3-gi python3-gst-1.0
+
+    On Arch and derived systems:
+
+        * ``[sudo] pacman -S gst-python
 
     """
 
@@ -217,5 +225,14 @@ class MediaGstreamerPlugin(MediaPlugin):
             return PlayerState.PLAY
         return PlayerState.IDLE
 
+    def toggle_subtitles(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def set_subtitles(self, filename, *args, **kwargs):
+        raise NotImplementedError
+
+    def remove_subtitles(self, *args, **kwargs):
+        raise NotImplementedError
+
 
 # vim:sw=4:ts=4:et:
diff --git a/platypush/plugins/media/gstreamer/manifest.yaml b/platypush/plugins/media/gstreamer/manifest.yaml
new file mode 100644
index 00000000..bdc0c567
--- /dev/null
+++ b/platypush/plugins/media/gstreamer/manifest.yaml
@@ -0,0 +1,12 @@
+manifest:
+  events: {}
+  install:
+    apt:
+      - python3-gi
+      - python3-gst-1.0
+    pacman:
+      - gst-python
+      - python-gobject
+
+  package: platypush.plugins.media.gstreamer
+  type: plugin
diff --git a/platypush/plugins/media/kodi.py b/platypush/plugins/media/kodi/__init__.py
similarity index 96%
rename from platypush/plugins/media/kodi.py
rename to platypush/plugins/media/kodi/__init__.py
index 2d22d30d..c5cedc0c 100644
--- a/platypush/plugins/media/kodi.py
+++ b/platypush/plugins/media/kodi/__init__.py
@@ -9,7 +9,6 @@ from platypush.message.event.media import MediaPlayEvent, MediaPauseEvent, Media
     MediaSeekEvent, MediaVolumeChangedEvent
 
 
-# noinspection PyUnusedLocal
 class MediaKodiPlugin(MediaPlugin):
     """
     Plugin to interact with a Kodi media player instance
@@ -17,9 +16,9 @@ class MediaKodiPlugin(MediaPlugin):
     Requires:
 
         * **kodi-json** (``pip install kodi-json``)
-        * **websocket-client** (``pip install websocket-client``), optional, for player events support
     """
 
+    # noinspection HttpUrlsUsage
     def __init__(self, host, http_port=8080, websocket_port=9090, username=None, password=None, **kwargs):
         """
         :param host: Kodi host name or IP
@@ -504,6 +503,7 @@ class MediaKodiPlugin(MediaPlugin):
 
         :param position: Seek time in seconds
         :type position: float
+        :param player_id: ID of the target player (default: configured/current player).
         """
 
         if player_id is None:
@@ -522,6 +522,7 @@ class MediaKodiPlugin(MediaPlugin):
 
         :param position:  Seek time in seconds
         :type position: float
+        :param player_id: ID of the target player (default: configured/current player).
         """
         return self.seek(position=position, player_id=player_id, *args, **kwargs)
 
@@ -532,6 +533,7 @@ class MediaKodiPlugin(MediaPlugin):
 
         :param offset: Backward seek duration (default: 30 seconds)
         :type offset: float
+        :param player_id: ID of the target player (default: configured/current player).
         """
 
         if player_id is None:
@@ -552,6 +554,7 @@ class MediaKodiPlugin(MediaPlugin):
 
         :param offset: Forward seek duration (default: 30 seconds)
         :type offset: float
+        :param player_id: ID of the target player (default: configured/current player).
         """
 
         if player_id is None:
@@ -647,5 +650,20 @@ class MediaKodiPlugin(MediaPlugin):
         ret['state'] = PlayerState.PAUSE.value if player_info.get('speed', 0) == 0 else PlayerState.PLAY.value
         return ret
 
+    def toggle_subtitles(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def set_subtitles(self, filename, *args, **kwargs):
+        raise NotImplementedError
+
+    def remove_subtitles(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def is_playing(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def load(self, resource, *args, **kwargs):
+        raise NotImplementedError
+
 
 # vim:sw=4:ts=4:et:
diff --git a/platypush/plugins/media/kodi/manifest.yaml b/platypush/plugins/media/kodi/manifest.yaml
new file mode 100644
index 00000000..123e964f
--- /dev/null
+++ b/platypush/plugins/media/kodi/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - kodi-json
+  package: platypush.plugins.media.kodi
+  type: plugin
diff --git a/platypush/plugins/media/mplayer.py b/platypush/plugins/media/mplayer/__init__.py
similarity index 97%
rename from platypush/plugins/media/mplayer.py
rename to platypush/plugins/media/mplayer/__init__.py
index d5e8571c..f4219dca 100644
--- a/platypush/plugins/media/mplayer.py
+++ b/platypush/plugins/media/mplayer/__init__.py
@@ -208,7 +208,7 @@ class MediaMplayerPlugin(MediaPlugin):
     def execute(self, cmd, args=None):
         """
         Execute a raw MPlayer command. See
-        http://www.mplayerhq.hu/DOCS/tech/slave.txt for a reference or call
+        https://www.mplayerhq.hu/DOCS/tech/slave.txt for a reference or call
         :meth:`platypush.plugins.media.mplayer.list_actions` to get a list
         """
 
@@ -329,7 +329,7 @@ class MediaMplayerPlugin(MediaPlugin):
         return self.status()
 
     @action
-    def add_subtitles(self, filename, **args):
+    def add_subtitles(self, filename, **__):
         """ Sets media subtitles from filename """
         self._exec('sub_visibility', 1)
         self._exec('sub_load', filename)
@@ -451,7 +451,7 @@ class MediaMplayerPlugin(MediaPlugin):
     def get_property(self, property, args=None):
         """
         Get a player property (e.g. pause, fullscreen etc.). See
-        http://www.mplayerhq.hu/DOCS/tech/slave.txt for a full list of the
+        https://www.mplayerhq.hu/DOCS/tech/slave.txt for a full list of the
         available properties
         """
 
@@ -473,7 +473,7 @@ class MediaMplayerPlugin(MediaPlugin):
     def set_property(self, property, value, args=None):
         """
         Set a player property (e.g. pause, fullscreen etc.). See
-        http://www.mplayerhq.hu/DOCS/tech/slave.txt for a full list of the
+        https://www.mplayerhq.hu/DOCS/tech/slave.txt for a full list of the
         available properties
         """
 
@@ -497,7 +497,7 @@ class MediaMplayerPlugin(MediaPlugin):
     def step_property(self, property, value, args=None):
         """
         Step a player property (e.g. volume, time_pos etc.). See
-        http://www.mplayerhq.hu/DOCS/tech/slave.txt for a full list of the
+        https://www.mplayerhq.hu/DOCS/tech/slave.txt for a full list of the
         available steppable properties
         """
 
@@ -517,4 +517,8 @@ class MediaMplayerPlugin(MediaPlugin):
 
         return response
 
+    def set_subtitles(self, filename, *args, **kwargs):
+        raise NotImplementedError
+
+
 # vim:sw=4:ts=4:et:
diff --git a/platypush/plugins/media/mplayer/manifest.yaml b/platypush/plugins/media/mplayer/manifest.yaml
new file mode 100644
index 00000000..41af7f62
--- /dev/null
+++ b/platypush/plugins/media/mplayer/manifest.yaml
@@ -0,0 +1,9 @@
+manifest:
+  events: {}
+  install:
+    apt:
+      - mplayer
+    pacman:
+      - mplayer
+  package: platypush.plugins.media.mplayer
+  type: plugin
diff --git a/platypush/plugins/media/mpv.py b/platypush/plugins/media/mpv/__init__.py
similarity index 100%
rename from platypush/plugins/media/mpv.py
rename to platypush/plugins/media/mpv/__init__.py
diff --git a/platypush/plugins/media/mpv/manifest.yaml b/platypush/plugins/media/mpv/manifest.yaml
new file mode 100644
index 00000000..ce2ca462
--- /dev/null
+++ b/platypush/plugins/media/mpv/manifest.yaml
@@ -0,0 +1,11 @@
+manifest:
+  events: {}
+  install:
+    pip:
+      - python-mpv
+    apt:
+      - mpv
+    pacman:
+      - mpv
+  package: platypush.plugins.media.mpv
+  type: plugin
diff --git a/platypush/plugins/media/omxplayer.py b/platypush/plugins/media/omxplayer/__init__.py
similarity index 96%
rename from platypush/plugins/media/omxplayer.py
rename to platypush/plugins/media/omxplayer/__init__.py
index 93af739f..967dabc5 100644
--- a/platypush/plugins/media/omxplayer.py
+++ b/platypush/plugins/media/omxplayer/__init__.py
@@ -29,7 +29,7 @@ class MediaOmxplayerPlugin(MediaPlugin):
         :param args: Arguments that will be passed to the OMXPlayer constructor
             (e.g. subtitles, volume, start position, window size etc.) see
             https://github.com/popcornmix/omxplayer#synopsis and
-            http://python-omxplayer-wrapper.readthedocs.io/en/latest/omxplayer/#omxplayer.player.OMXPlayer
+            https://python-omxplayer-wrapper.readthedocs.io/en/latest/omxplayer/#omxplayer.player.OMXPlayer
         :type args: list
         """
 
@@ -376,7 +376,7 @@ class MediaOmxplayerPlugin(MediaPlugin):
         return _f
 
     def on_stop(self):
-        def _f(player, *_, **__):
+        def _f(*_, **__):
             self._post_event(MediaStopEvent)
             for callback in self._handlers[PlayerEvent.STOP.value]:
                 callback()
@@ -398,5 +398,14 @@ class MediaOmxplayerPlugin(MediaPlugin):
         self._player.positionEvent += self.on_seek()
         self._player.seekEvent += self.on_seek()
 
+    def toggle_subtitles(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def set_subtitles(self, filename, *args, **kwargs):
+        raise NotImplementedError
+
+    def remove_subtitles(self, *args, **kwargs):
+        raise NotImplementedError
+
 
 # vim:sw=4:ts=4:et:
diff --git a/platypush/plugins/media/omxplayer/manifest.yaml b/platypush/plugins/media/omxplayer/manifest.yaml
new file mode 100644
index 00000000..e77f8ac9
--- /dev/null
+++ b/platypush/plugins/media/omxplayer/manifest.yaml
@@ -0,0 +1,9 @@
+manifest:
+  events: {}
+  install:
+    pip:
+      - omxplayer-wrapper
+    apt:
+      - omxplayer
+  package: platypush.plugins.media.omxplayer
+  type: plugin
diff --git a/platypush/plugins/media/plex.py b/platypush/plugins/media/plex/__init__.py
similarity index 99%
rename from platypush/plugins/media/plex.py
rename to platypush/plugins/media/plex/__init__.py
index caf2abd8..4986348f 100644
--- a/platypush/plugins/media/plex.py
+++ b/platypush/plugins/media/plex/__init__.py
@@ -119,7 +119,7 @@ class MediaPlexPlugin(Plugin):
 
     @staticmethod
     def get_chromecast(chromecast):
-        from .lib.plexcast import PlexController
+        from ..lib.plexcast import PlexController
 
         hndl = PlexController()
         hndl.namespace = 'urn:x-cast:com.google.cast.sse'
diff --git a/platypush/plugins/media/plex/manifest.yaml b/platypush/plugins/media/plex/manifest.yaml
new file mode 100644
index 00000000..7729a8d7
--- /dev/null
+++ b/platypush/plugins/media/plex/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - plexapi
+  package: platypush.plugins.media.plex
+  type: plugin
diff --git a/platypush/plugins/media/search/local.py b/platypush/plugins/media/search/local.py
index 5d2e5402..3298dfe1 100644
--- a/platypush/plugins/media/search/local.py
+++ b/platypush/plugins/media/search/local.py
@@ -22,10 +22,6 @@ class LocalMediaSearcher(MediaSearcher):
     will index the media files for a faster search, it will detect which
     directories have been changed since the last scan and re-index their content
     if needed.
-
-    Requires:
-
-        * **sqlalchemy** (``pip install sqlalchemy``)
     """
 
     _filename_separators = r'[.,_\-@()\[\]\{\}\s\'\"]+'
diff --git a/platypush/plugins/media/subtitles.py b/platypush/plugins/media/subtitles/__init__.py
similarity index 99%
rename from platypush/plugins/media/subtitles.py
rename to platypush/plugins/media/subtitles/__init__.py
index f55e9bef..b65277d1 100644
--- a/platypush/plugins/media/subtitles.py
+++ b/platypush/plugins/media/subtitles/__init__.py
@@ -16,7 +16,7 @@ class MediaSubtitlesPlugin(Plugin):
 
         * **python-opensubtitles** (``pip install -e 'git+https://github.com/agonzalezro/python-opensubtitles#egg=python-opensubtitles'``)
         * **webvtt** (``pip install webvtt-py``), optional, to convert srt subtitles into vtt format ready for web streaming
-        * **requests** (``pip install requests``)
+
     """
 
     def __init__(self, username, password, language=None, **kwargs):
diff --git a/platypush/plugins/media/subtitles/manifest.yaml b/platypush/plugins/media/subtitles/manifest.yaml
new file mode 100644
index 00000000..81bda093
--- /dev/null
+++ b/platypush/plugins/media/subtitles/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - python-opensubtitles
+    - webvtt-py
+  package: platypush.plugins.media.subtitles
+  type: plugin
diff --git a/platypush/plugins/media/vlc.py b/platypush/plugins/media/vlc/__init__.py
similarity index 100%
rename from platypush/plugins/media/vlc.py
rename to platypush/plugins/media/vlc/__init__.py
diff --git a/platypush/plugins/media/vlc/manifest.yaml b/platypush/plugins/media/vlc/manifest.yaml
new file mode 100644
index 00000000..13af0338
--- /dev/null
+++ b/platypush/plugins/media/vlc/manifest.yaml
@@ -0,0 +1,11 @@
+manifest:
+  events: {}
+  install:
+    pip:
+      - python-vlc
+    apt:
+      - vlc
+    pacman:
+      - vlc
+  package: platypush.plugins.media.vlc
+  type: plugin
diff --git a/platypush/plugins/media/webtorrent.py b/platypush/plugins/media/webtorrent/__init__.py
similarity index 94%
rename from platypush/plugins/media/webtorrent.py
rename to platypush/plugins/media/webtorrent/__init__.py
index 74794316..3e654a22 100644
--- a/platypush/plugins/media/webtorrent.py
+++ b/platypush/plugins/media/webtorrent/__init__.py
@@ -34,7 +34,6 @@ class MediaWebtorrentPlugin(MediaPlugin):
         * **webtorrent-cli** installed on your system (``npm install -g webtorrent-cli``)
         * A media plugin configured for streaming (e.g. media.mplayer, media.vlc, media.mpv or media.omxplayer)
     """
-
     _supported_media_plugins = {'media.mplayer', 'media.omxplayer', 'media.mpv',
                                 'media.vlc', 'media.webtorrent'}
 
@@ -421,5 +420,44 @@ class MediaWebtorrentPlugin(MediaPlugin):
 
         return {'state': self._media_plugin.status().get('state', PlayerState.STOP.value)}
 
+    def pause(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def voldown(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def volup(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def back(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def forward(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def toggle_subtitles(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def set_subtitles(self, filename, *args, **kwargs):
+        raise NotImplementedError
+
+    def remove_subtitles(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def is_playing(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def mute(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def seek(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def set_position(self, *args, **kwargs):
+        raise NotImplementedError
+
+    def set_volume(self, volume):
+        raise NotImplementedError
+
 
 # vim:sw=4:ts=4:et:
diff --git a/platypush/plugins/media/webtorrent/manifest.yaml b/platypush/plugins/media/webtorrent/manifest.yaml
new file mode 100644
index 00000000..bc5d7160
--- /dev/null
+++ b/platypush/plugins/media/webtorrent/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.media.webtorrent
+  type: plugin
diff --git a/platypush/plugins/midi.py b/platypush/plugins/midi/__init__.py
similarity index 82%
rename from platypush/plugins/midi.py
rename to platypush/plugins/midi/__init__.py
index a954050c..226a1c87 100644
--- a/platypush/plugins/midi.py
+++ b/platypush/plugins/midi/__init__.py
@@ -15,15 +15,13 @@ class MidiPlugin(Plugin):
 
     _played_notes = set()
 
-    def __init__(self, device_name='Platypush virtual MIDI output',
-                 *args, **kwargs):
+    def __init__(self, device_name='Platypush virtual MIDI output', **kwargs):
         """
         :param device_name: MIDI virtual device name (default: *Platypush virtual MIDI output*)
         :type device_name: str
         """
-
         import rtmidi
-        super().__init__(*args, **kwargs)
+        super().__init__(**kwargs)
 
         self.device_name = device_name
         self.midiout = rtmidi.MidiOut()
@@ -33,15 +31,14 @@ class MidiPlugin(Plugin):
             self.midiout.open_port(0)
             self.logger.info('Initialized MIDI plugin on port 0')
         else:
-            self.open_virtual_port(self.device_name)
-            self.logger.info('Initialized MIDI plugin on virtual device {}'.
-                         format(self.device_name))
-
+            self.midiout.open_virtual_port(self.device_name)
+            self.logger.info('Initialized MIDI plugin on virtual device {}'.format(self.device_name))
 
     @action
-    def send_message(self, values, *args, **kwargs):
+    def send_message(self, values):
         """
-        :param values: Values is expected to be a list containing the MIDI command code and the command parameters - see reference at https://ccrma.stanford.edu/~craig/articles/linuxmidi/misc/essenmidi.html
+        :param values: Values is expected to be a list containing the MIDI command code and the command parameters -
+            see reference at https://ccrma.stanford.edu/~craig/articles/linuxmidi/misc/essenmidi.html
         :type values: list[int]
 
         Available MIDI commands:
@@ -64,13 +61,9 @@ class MidiPlugin(Plugin):
              * ``0xFC``    Stop (Sys Realtime)
              * ``0xFE``    Active Sensing (Sys Realtime)
              * ``0xFF``    System Reset (Sys Realtime)
-
-        :param args: Extra args that will be passed to ``rtmidi.send_message``
-        :param kwargs: Extra kwargs that will be passed to ``rtmidi.send_message``
         """
 
-        self.midiout.send_message(values, *args, **kwargs)
-
+        self.midiout.send_message(values)
 
     @action
     def play_note(self, note, velocity, duration=0):
@@ -95,7 +88,6 @@ class MidiPlugin(Plugin):
             self.send_message([0x80, note, 0])  # Note off
             self._played_notes.remove(note)
 
-
     @action
     def release_note(self, note):
         """
@@ -108,7 +100,6 @@ class MidiPlugin(Plugin):
         self.send_message([0x80, note, 0])  # Note off
         self._played_notes.remove(note)
 
-
     @action
     def release_all_notes(self):
         """
@@ -119,7 +110,6 @@ class MidiPlugin(Plugin):
         for note in played_notes:
             self.release_note(note)
 
-
     @action
     def query_ports(self):
         """
@@ -131,10 +121,8 @@ class MidiPlugin(Plugin):
         out_ports = rtmidi.MidiOut().get_ports()
 
         return {
-            'in': { i: port for i, port in enumerate(in_ports) },
-            'out': { i: port for i, port in enumerate(out_ports) },
+            'in': {i: port for i, port in enumerate(in_ports)},
+            'out': {i: port for i, port in enumerate(out_ports)},
         }
 
-
 # vim:sw=4:ts=4:et:
-
diff --git a/platypush/plugins/midi/manifest.yaml b/platypush/plugins/midi/manifest.yaml
new file mode 100644
index 00000000..3a91aba9
--- /dev/null
+++ b/platypush/plugins/midi/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - python-rtmidi
+  package: platypush.plugins.midi
+  type: plugin
diff --git a/platypush/plugins/ml/cv.py b/platypush/plugins/ml/cv/__init__.py
similarity index 100%
rename from platypush/plugins/ml/cv.py
rename to platypush/plugins/ml/cv/__init__.py
diff --git a/platypush/plugins/ml/cv/manifest.yaml b/platypush/plugins/ml/cv/manifest.yaml
new file mode 100644
index 00000000..47414168
--- /dev/null
+++ b/platypush/plugins/ml/cv/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - numpy
+    - opencv-python
+  package: platypush.plugins.ml.cv
+  type: plugin
diff --git a/platypush/plugins/mobile/join/__init__.py b/platypush/plugins/mobile/join/__init__.py
index 5ca5ce95..fb65e6ff 100644
--- a/platypush/plugins/mobile/join/__init__.py
+++ b/platypush/plugins/mobile/join/__init__.py
@@ -359,7 +359,7 @@ class MobileJoinPlugin(Plugin):
             Default is 2.
         :param vibration_pattern: If the notification is received on an Android device, the vibration pattern in this
             field will change the way the device vibrates with it. You can easily create a pattern by going to the
-            `AutoRemote notification page <http://autoremotejoaomgcd.appspot.com/AutoRemoteNotification.html>`_
+            `AutoRemote notification page <https://autoremotejoaomgcd.appspot.com/AutoRemoteNotification.html>`_
             and generate the pattern in the Vibration Pattern field
         :type vibration_pattern: str (comma-separated float values) or list[float]
         :param dismiss_on_touch: If set the notification will be dismissed when touched (default: False)
diff --git a/platypush/plugins/mobile/join/manifest.yaml b/platypush/plugins/mobile/join/manifest.yaml
new file mode 100644
index 00000000..dd5aa8df
--- /dev/null
+++ b/platypush/plugins/mobile/join/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.mobile.join
+  type: plugin
diff --git a/platypush/plugins/mqtt.py b/platypush/plugins/mqtt/__init__.py
similarity index 99%
rename from platypush/plugins/mqtt.py
rename to platypush/plugins/mqtt/__init__.py
index 2fe9eb37..d757211c 100644
--- a/platypush/plugins/mqtt.py
+++ b/platypush/plugins/mqtt/__init__.py
@@ -13,7 +13,7 @@ from platypush.plugins import Plugin, action
 class MqttPlugin(Plugin):
     """
     This plugin allows you to send custom message to a message queue compatible
-    with the MQTT protocol, see http://mqtt.org/
+    with the MQTT protocol, see https://mqtt.org/
 
     Requires:
 
diff --git a/platypush/plugins/mqtt/manifest.yaml b/platypush/plugins/mqtt/manifest.yaml
new file mode 100644
index 00000000..267ac1d4
--- /dev/null
+++ b/platypush/plugins/mqtt/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - paho-mqtt
+  package: platypush.plugins.mqtt
+  type: plugin
diff --git a/platypush/plugins/music/mpd/manifest.yaml b/platypush/plugins/music/mpd/manifest.yaml
new file mode 100644
index 00000000..42824c0e
--- /dev/null
+++ b/platypush/plugins/music/mpd/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - python-mpd2
+  package: platypush.plugins.music.mpd
+  type: plugin
diff --git a/platypush/plugins/music/snapcast.py b/platypush/plugins/music/snapcast/__init__.py
similarity index 99%
rename from platypush/plugins/music/snapcast.py
rename to platypush/plugins/music/snapcast/__init__.py
index ccdde50d..b1cd3bfc 100644
--- a/platypush/plugins/music/snapcast.py
+++ b/platypush/plugins/music/snapcast/__init__.py
@@ -19,8 +19,7 @@ class MusicSnapcastPlugin(Plugin):
     _DEFAULT_SNAPCAST_PORT = 1705
     _SOCKET_EOL = '\r\n'.encode()
 
-    def __init__(self, host='localhost', port=_DEFAULT_SNAPCAST_PORT,
-                 *args, **kwargs):
+    def __init__(self, host='localhost', port=_DEFAULT_SNAPCAST_PORT, **kwargs):
         """
         :param host: Default Snapcast server host (default: localhost)
         :type host: str
diff --git a/platypush/plugins/music/snapcast/manifest.yaml b/platypush/plugins/music/snapcast/manifest.yaml
new file mode 100644
index 00000000..7ca2536f
--- /dev/null
+++ b/platypush/plugins/music/snapcast/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.music.snapcast
+  type: plugin
diff --git a/platypush/plugins/music/spotify.py b/platypush/plugins/music/spotify/__init__.py
similarity index 100%
rename from platypush/plugins/music/spotify.py
rename to platypush/plugins/music/spotify/__init__.py
diff --git a/platypush/plugins/music/spotify/manifest.yaml b/platypush/plugins/music/spotify/manifest.yaml
new file mode 100644
index 00000000..c68d1c42
--- /dev/null
+++ b/platypush/plugins/music/spotify/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.music.spotify
+  type: plugin
diff --git a/platypush/plugins/nextcloud.py b/platypush/plugins/nextcloud/__init__.py
similarity index 99%
rename from platypush/plugins/nextcloud.py
rename to platypush/plugins/nextcloud/__init__.py
index 4cf57ee4..a2306cb3 100644
--- a/platypush/plugins/nextcloud.py
+++ b/platypush/plugins/nextcloud/__init__.py
@@ -46,7 +46,7 @@ class NextcloudPlugin(Plugin):
 
     Requires:
 
-        * **nextcloud-API** (``pip install git+https://github.com/EnterpriseyIntranet/nextcloud-API.git``)
+        * **nextcloud-api-wrapper** (``pip install nextcloud-api-wrapper``)
 
     """
 
diff --git a/platypush/plugins/nextcloud/manifest.yaml b/platypush/plugins/nextcloud/manifest.yaml
new file mode 100644
index 00000000..47a10c6b
--- /dev/null
+++ b/platypush/plugins/nextcloud/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - nextcloud-api-wrapper
+  package: platypush.plugins.nextcloud
+  type: plugin
diff --git a/platypush/plugins/nmap.py b/platypush/plugins/nmap/__init__.py
similarity index 100%
rename from platypush/plugins/nmap.py
rename to platypush/plugins/nmap/__init__.py
diff --git a/platypush/plugins/nmap/manifest.yaml b/platypush/plugins/nmap/manifest.yaml
new file mode 100644
index 00000000..cc2a0284
--- /dev/null
+++ b/platypush/plugins/nmap/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.nmap
+  type: plugin
diff --git a/platypush/plugins/otp.py b/platypush/plugins/otp/__init__.py
similarity index 100%
rename from platypush/plugins/otp.py
rename to platypush/plugins/otp/__init__.py
diff --git a/platypush/plugins/otp/manifest.yaml b/platypush/plugins/otp/manifest.yaml
new file mode 100644
index 00000000..a4e2b512
--- /dev/null
+++ b/platypush/plugins/otp/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pyotp
+  package: platypush.plugins.otp
+  type: plugin
diff --git a/platypush/plugins/pihole.py b/platypush/plugins/pihole/__init__.py
similarity index 100%
rename from platypush/plugins/pihole.py
rename to platypush/plugins/pihole/__init__.py
diff --git a/platypush/plugins/pihole/manifest.yaml b/platypush/plugins/pihole/manifest.yaml
new file mode 100644
index 00000000..23b683a4
--- /dev/null
+++ b/platypush/plugins/pihole/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.pihole
+  type: plugin
diff --git a/platypush/plugins/ping.py b/platypush/plugins/ping/__init__.py
similarity index 100%
rename from platypush/plugins/ping.py
rename to platypush/plugins/ping/__init__.py
diff --git a/platypush/plugins/ping/manifest.yaml b/platypush/plugins/ping/manifest.yaml
new file mode 100644
index 00000000..8d7984be
--- /dev/null
+++ b/platypush/plugins/ping/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.ping
+  type: plugin
diff --git a/platypush/plugins/printer/cups.py b/platypush/plugins/printer/cups/__init__.py
similarity index 100%
rename from platypush/plugins/printer/cups.py
rename to platypush/plugins/printer/cups/__init__.py
diff --git a/platypush/plugins/printer/cups/manifest.yaml b/platypush/plugins/printer/cups/manifest.yaml
new file mode 100644
index 00000000..1d832d6c
--- /dev/null
+++ b/platypush/plugins/printer/cups/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pycups
+  package: platypush.plugins.printer.cups
+  type: plugin
diff --git a/platypush/plugins/pushbullet.py b/platypush/plugins/pushbullet/__init__.py
similarity index 98%
rename from platypush/plugins/pushbullet.py
rename to platypush/plugins/pushbullet/__init__.py
index 837e2bb2..9c9fa122 100644
--- a/platypush/plugins/pushbullet.py
+++ b/platypush/plugins/pushbullet/__init__.py
@@ -1,5 +1,6 @@
 import json
 import os
+from typing import Optional
 
 import requests
 
@@ -15,11 +16,10 @@ class PushbulletPlugin(Plugin):
 
     Requires:
 
-        * **requests** (``pip install requests``)
         * The :class:`platypush.backend.pushbullet.Pushbullet` backend enabled
     """
 
-    def __init__(self, token: str = None, **kwargs):
+    def __init__(self, token: Optional[str] = None, **kwargs):
         """
         :param token: Pushbullet API token. If not set the plugin will try to retrieve it from
             the Pushbullet backend configuration, if available
diff --git a/platypush/plugins/pushbullet/manifest.yaml b/platypush/plugins/pushbullet/manifest.yaml
new file mode 100644
index 00000000..4e334226
--- /dev/null
+++ b/platypush/plugins/pushbullet/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.pushbullet
+  type: plugin
diff --git a/platypush/plugins/pwm/pca9685.py b/platypush/plugins/pwm/pca9685/__init__.py
similarity index 98%
rename from platypush/plugins/pwm/pca9685.py
rename to platypush/plugins/pwm/pca9685/__init__.py
index 1d27efee..6da28116 100644
--- a/platypush/plugins/pwm/pca9685.py
+++ b/platypush/plugins/pwm/pca9685/__init__.py
@@ -28,6 +28,11 @@ class PwmPca9685Plugin(Plugin):
         # pip3 install --upgrade adafruit-circuitpython-pca9685
 
     This plugin works with a PCA9685 circuit connected to the Platypush host over I2C interface.
+
+    Requires:
+
+        - **adafruit-circuitpython-pca9685** (``pip install adafruit-circuitpython-pca9685``)
+
     """
 
     def __init__(self, frequency: float, min_duty_cycle: int = 0, max_duty_cycle: int = 0xffff, channels: Iterable[int] = tuple(range(16)), **kwargs):
diff --git a/platypush/plugins/pwm/pca9685/manifest.yaml b/platypush/plugins/pwm/pca9685/manifest.yaml
new file mode 100644
index 00000000..5abb1a02
--- /dev/null
+++ b/platypush/plugins/pwm/pca9685/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - adafruit-circuitpython-pca9685
+  package: platypush.plugins.pwm.pca9685
+  type: plugin
diff --git a/platypush/plugins/qrcode.py b/platypush/plugins/qrcode/__init__.py
similarity index 93%
rename from platypush/plugins/qrcode.py
rename to platypush/plugins/qrcode/__init__.py
index 1a51b1f5..e97fb365 100644
--- a/platypush/plugins/qrcode.py
+++ b/platypush/plugins/qrcode/__init__.py
@@ -49,7 +49,7 @@ class QrcodePlugin(Plugin):
     # noinspection PyShadowingBuiltins
     @action
     def generate(self, content: str, output_file: Optional[str] = None, show: bool = False,
-                 format: str = 'png', camera_plugin: Optional[str] = None) -> QrcodeGeneratedResponse:
+                 format: str = 'png') -> QrcodeGeneratedResponse:
         """
         Generate a QR code.
         If you configured the :class:`platypush.backend.http.HttpBackend` then you can also generate
@@ -62,8 +62,6 @@ class QrcodePlugin(Plugin):
         :param show: If True, and if the device where the application runs has an active display,
             then the generated QR code will be shown on display.
         :param format: Output image format (default: ``png``).
-        :param camera_plugin: If set then this plugin (e.g. ``camera`` or ``camera.pi``) will be used to capture
-            live images from the camera and search for bar codes or QR-codes.
         :return: :class:`platypush.message.response.qrcode.QrcodeGeneratedResponse`.
         """
         import qrcode
@@ -102,12 +100,13 @@ class QrcodePlugin(Plugin):
         results = pyzbar.decode(img)
         return QrcodeDecodedResponse(results)
 
-    def _convert_frame(self, frame):
+    @staticmethod
+    def _convert_frame(frame):
         import numpy as np
         from PIL import Image
 
         assert isinstance(frame, np.ndarray), \
-                'Image conversion only works with numpy arrays for now (got {})'.format(type(frame))
+            'Image conversion only works with numpy arrays for now (got {})'.format(type(frame))
         mode = 'RGB'
         if len(frame.shape) > 2 and frame.shape[2] == 4:
             mode = 'RGBA'
@@ -173,5 +172,4 @@ class QrcodePlugin(Plugin):
     def stop_scanning(self):
         self._capturing.clear()
 
-
 # vim:sw=4:ts=4:et:
diff --git a/platypush/plugins/qrcode/manifest.yaml b/platypush/plugins/qrcode/manifest.yaml
new file mode 100644
index 00000000..b64b1b80
--- /dev/null
+++ b/platypush/plugins/qrcode/manifest.yaml
@@ -0,0 +1,10 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - numpy
+    - qrcode
+    - pyzbar
+    - Pillow
+  package: platypush.plugins.qrcode
+  type: plugin
diff --git a/platypush/plugins/redis.py b/platypush/plugins/redis/__init__.py
similarity index 97%
rename from platypush/plugins/redis.py
rename to platypush/plugins/redis/__init__.py
index 0c45bae8..56aa26a9 100644
--- a/platypush/plugins/redis.py
+++ b/platypush/plugins/redis/__init__.py
@@ -7,10 +7,6 @@ from platypush.plugins import Plugin, action
 class RedisPlugin(Plugin):
     """
     Plugin to send messages on Redis queues.
-
-    Requires:
-
-        * **redis** (``pip install redis``)
     """
 
     def __init__(self, *args, **kwargs):
diff --git a/platypush/plugins/redis/manifest.yaml b/platypush/plugins/redis/manifest.yaml
new file mode 100644
index 00000000..c41c2cb8
--- /dev/null
+++ b/platypush/plugins/redis/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.redis
+  type: plugin
diff --git a/platypush/plugins/rtorrent.py b/platypush/plugins/rtorrent/__init__.py
similarity index 100%
rename from platypush/plugins/rtorrent.py
rename to platypush/plugins/rtorrent/__init__.py
diff --git a/platypush/plugins/rtorrent/manifest.yaml b/platypush/plugins/rtorrent/manifest.yaml
new file mode 100644
index 00000000..8c6da50c
--- /dev/null
+++ b/platypush/plugins/rtorrent/manifest.yaml
@@ -0,0 +1,23 @@
+manifest:
+  events:
+    platypush.message.event.torrent.TorrentDownloadCompletedEvent: when a transfer
+      is completed.
+    platypush.message.event.torrent.TorrentDownloadProgressEvent: when a transfer
+      is progressing.
+    platypush.message.event.torrent.TorrentDownloadStartEvent: when a torrent transfer
+      starts.
+    platypush.message.event.torrent.TorrentDownloadedMetadataEvent: when the metadata
+      of a torrenttransfer has been downloaded.
+    platypush.message.event.torrent.TorrentPausedEvent: when a transfer is paused.
+    platypush.message.event.torrent.TorrentQueuedEvent: when a new torrent transfer
+      is queued.
+    platypush.message.event.torrent.TorrentRemovedEvent: when a torrent transfer is
+      removed.
+    platypush.message.event.torrent.TorrentResumedEvent: when a transfer is resumed.
+  install:
+    apt:
+      - rtorrent
+    pacman:
+      - rtorrent
+  package: platypush.plugins.rtorrent
+  type: plugin
diff --git a/platypush/plugins/sensor/__init__.py b/platypush/plugins/sensor/__init__.py
index eccc8ef4..a60a8a9e 100644
--- a/platypush/plugins/sensor/__init__.py
+++ b/platypush/plugins/sensor/__init__.py
@@ -1,7 +1,9 @@
+from abc import ABC, abstractmethod
+
 from platypush.plugins import Plugin, action
 
 
-class SensorPlugin(Plugin):
+class SensorPlugin(Plugin, ABC):
     """
     Sensor abstract plugin. Any plugin that interacts with sensors
     should implement this class (and the get_measurement() method)
@@ -10,6 +12,7 @@ class SensorPlugin(Plugin):
     def __init__(self, **kwargs):
         super().__init__(**kwargs)
 
+    @abstractmethod
     @action
     def get_measurement(self, *args, **kwargs):
         """
@@ -43,7 +46,6 @@ class SensorPlugin(Plugin):
         """
         Alias for ``get_measurement``
         """
-
         return self.get_measurement(*args, **kwargs).output
 
     @action
diff --git a/platypush/plugins/serial/manifest.yaml b/platypush/plugins/serial/manifest.yaml
new file mode 100644
index 00000000..e5978d23
--- /dev/null
+++ b/platypush/plugins/serial/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.serial
+  type: plugin
diff --git a/platypush/plugins/shell/manifest.yaml b/platypush/plugins/shell/manifest.yaml
new file mode 100644
index 00000000..39ea9f5a
--- /dev/null
+++ b/platypush/plugins/shell/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.shell
+  type: plugin
diff --git a/platypush/plugins/slack.py b/platypush/plugins/slack/__init__.py
similarity index 95%
rename from platypush/plugins/slack.py
rename to platypush/plugins/slack/__init__.py
index 5e4cfdbe..9e85f669 100644
--- a/platypush/plugins/slack.py
+++ b/platypush/plugins/slack/__init__.py
@@ -3,7 +3,6 @@ from typing import Optional, Iterable
 
 import multiprocessing
 import requests
-import websocket
 from websocket import WebSocketApp
 
 from platypush.context import get_bus
@@ -62,7 +61,7 @@ class SlackPlugin(ChatPlugin, RunnablePlugin):
         self._bot_token = bot_token
         self._user_token = user_token
         self._ws_url: Optional[str] = None
-        self._ws_app: Optional[websocket.WebSocketApp] = None
+        self._ws_app: Optional[WebSocketApp] = None
         self._ws_listener: Optional[multiprocessing.Process] = None
         self._connected_event = multiprocessing.Event()
         self._disconnected_event = multiprocessing.Event()
@@ -155,11 +154,11 @@ class SlackPlugin(ChatPlugin, RunnablePlugin):
             rs = rs.json()
             assert rs.get('ok')
             self._ws_url = rs.get('url')
-            self._ws_app = websocket.WebSocketApp(self._ws_url,
-                                                  on_open=self._on_open(),
-                                                  on_message=self._on_msg(),
-                                                  on_error=self._on_error(),
-                                                  on_close=self._on_close())
+            self._ws_app = WebSocketApp(self._ws_url,
+                                        on_open=self._on_open(),
+                                        on_message=self._on_msg(),
+                                        on_error=self._on_error(),
+                                        on_close=self._on_close())
 
             def server():
                 self._ws_app.run_forever()
diff --git a/platypush/plugins/slack/manifest.yaml b/platypush/plugins/slack/manifest.yaml
new file mode 100644
index 00000000..e9690c67
--- /dev/null
+++ b/platypush/plugins/slack/manifest.yaml
@@ -0,0 +1,14 @@
+manifest:
+  events:
+    platypush.message.event.chat.slack.SlackAppMentionReceivedEvent: when a message
+      that mentionsthe app is received on a monitored channel.
+    platypush.message.event.chat.slack.SlackMessageDeletedEvent: when a message is
+      deleted from amonitored channel.
+    platypush.message.event.chat.slack.SlackMessageEditedEvent: when a message is
+      edited on amonitored channel.
+    platypush.message.event.chat.slack.SlackMessageReceivedEvent: when a message is
+      received on amonitored channel.
+  install:
+    pip: []
+  package: platypush.plugins.slack
+  type: plugin
diff --git a/platypush/plugins/smartthings.py b/platypush/plugins/smartthings/__init__.py
similarity index 100%
rename from platypush/plugins/smartthings.py
rename to platypush/plugins/smartthings/__init__.py
diff --git a/platypush/plugins/smartthings/manifest.yaml b/platypush/plugins/smartthings/manifest.yaml
new file mode 100644
index 00000000..25e01e7f
--- /dev/null
+++ b/platypush/plugins/smartthings/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pysmartthings
+  package: platypush.plugins.smartthings
+  type: plugin
diff --git a/platypush/plugins/sound/__init__.py b/platypush/plugins/sound/__init__.py
index f63beca8..9f7e4e30 100644
--- a/platypush/plugins/sound/__init__.py
+++ b/platypush/plugins/sound/__init__.py
@@ -389,7 +389,7 @@ class SoundPlugin(Plugin):
                             raise e
 
                 completed_callback_event.wait()
-        except queue.Full as e:
+        except queue.Full:
             if stream_index is None or \
                     self._get_playback_state(stream_index) != PlaybackState.STOPPED:
                 self.logger.warning('Playback timeout: audio callback failed?')
@@ -721,7 +721,7 @@ class SoundPlugin(Plugin):
 
                 time.sleep(0.1)
 
-        except queue.Empty as e:
+        except queue.Empty:
             self.logger.warning('Recording timeout: audio callback failed?')
         finally:
             self.stop_playback([stream_index])
@@ -774,7 +774,7 @@ class SoundPlugin(Plugin):
                                                     completed_callback_event),
                         True)
 
-            return (stream_index, False)
+            return stream_index, False
 
     def _allocate_stream_index(self, stream_name=None,
                                completed_callback_event=None):
@@ -885,7 +885,6 @@ class SoundPlugin(Plugin):
                                      format(i))
                     continue
 
-                stream = self.active_streams[i]
                 if self.playback_state[i] == PlaybackState.PAUSED:
                     self.playback_state[i] = PlaybackState.PLAYING
                 elif self.playback_state[i] == PlaybackState.PLAYING:
diff --git a/platypush/plugins/sound/core.py b/platypush/plugins/sound/core.py
index f225126b..cfc51342 100644
--- a/platypush/plugins/sound/core.py
+++ b/platypush/plugins/sound/core.py
@@ -3,15 +3,16 @@
 """
 
 import enum
+import logging
 import json
 import math
 
 
 class WaveShape(enum.Enum):
-    SIN='sin'
-    SQUARE='square'
-    SAWTOOTH='sawtooth'
-    TRIANG='triang'
+    SIN = 'sin'
+    SQUARE = 'square'
+    SAWTOOTH = 'sawtooth'
+    TRIANG = 'triang'
 
 
 class Sound(object):
@@ -99,7 +100,7 @@ class Sound(object):
         """
 
         return (2.0 ** ((midi_note - cls.STANDARD_A_MIDI_NOTE) / 12.0)) \
-            * A_frequency
+               * A_frequency
 
     @classmethod
     def freq_to_note(cls, frequency, A_frequency=STANDARD_A_FREQUENCY):
@@ -107,7 +108,7 @@ class Sound(object):
         Converts a frequency in Hz to its closest MIDI note
 
         :param frequency: Frequency in Hz
-        :type midi_note: float
+        :type frequency: float
 
         :param A_frequency: Reference A4 frequency (default: 440 Hz)
         :type A_frequency: float
@@ -115,7 +116,7 @@ class Sound(object):
 
         # TODO return also the offset in % between the provided frequency
         # and the standard MIDI note frequency
-        return int(12.0 * math.log(frequency/A_frequency, 2)
+        return int(12.0 * math.log(frequency / A_frequency, 2)
                    + cls.STANDARD_A_MIDI_NOTE)
 
     def get_wave(self, t_start=0., t_end=0., samplerate=_DEFAULT_SAMPLERATE):
@@ -136,19 +137,19 @@ class Sound(object):
         """
 
         import numpy as np
-        x = np.linspace(t_start, t_end, int((t_end-t_start)*samplerate))
+        x = np.linspace(t_start, t_end, int((t_end - t_start) * samplerate))
 
         x = x.reshape(len(x), 1)
 
         if self.shape == WaveShape.SIN or self.shape == WaveShape.SQUARE:
-            wave = np.sin((2*np.pi*self.frequency*x) + np.pi*self.phase)
+            wave = np.sin((2 * np.pi * self.frequency * x) + np.pi * self.phase)
 
             if self.shape == WaveShape.SQUARE:
                 wave[wave < 0] = -1
                 wave[wave >= 0] = 1
         elif self.shape == WaveShape.SAWTOOTH or self.shape == WaveShape.TRIANG:
-            wave = 2 * (self.frequency*x -
-                        np.floor(0.5 + self.frequency*x))
+            wave = 2 * (self.frequency * x -
+                        np.floor(0.5 + self.frequency * x))
             if self.shape == WaveShape.TRIANG:
                 wave = 2 * np.abs(wave) - 1
         else:
@@ -156,7 +157,6 @@ class Sound(object):
 
         return self.gain * wave
 
-
     def fft(self, t_start=0., t_end=0., samplerate=_DEFAULT_SAMPLERATE,
             freq_range=None, freq_buckets=None):
         """
@@ -186,7 +186,7 @@ class Sound(object):
         import numpy as np
 
         if not freq_range:
-            freq_range = (0, int(samplerate/2))
+            freq_range = (0, int(samplerate / 2))
 
         wave = self.get_wave(t_start=t_start, t_end=t_end, samplerate=samplerate)
         fft = np.fft.fft(wave.reshape(len(wave)))
@@ -199,13 +199,11 @@ class Sound(object):
 
     def __iter__(self):
         for attr in ['midi_note', 'frequency', 'gain', 'duration']:
-            yield (attr, getattr(self, attr))
-
+            yield attr, getattr(self, attr)
 
     def __str__(self):
         return json.dumps(dict(self))
 
-
     @classmethod
     def build(cls, *args, **kwargs):
         """
@@ -236,24 +234,21 @@ class Mix(object):
 
     def __init__(self, *sounds):
         self._sounds = []
+        self.logger = logging.getLogger(__name__)
 
         for sound in sounds:
             self.add(sound)
 
-
     def __iter__(self):
         for sound in self._sounds:
             yield dict(sound)
 
-
     def __str__(self):
         return json.dumps(list(self))
 
-
     def add(self, sound):
         self._sounds.append(Sound.build(sound))
 
-
     def remove(self, sound_index):
         if sound_index >= len(self._sounds):
             self.logger.error('No such sound index: {} in mix {}'.format(
@@ -262,7 +257,7 @@ class Mix(object):
 
         self._sounds.pop(sound_index)
 
-
+    # noinspection PyProtectedMember
     def get_wave(self, t_start=0., t_end=0., normalize_range=(-1.0, 1.0),
                  on_clip='scale', samplerate=Sound._DEFAULT_SAMPLERATE):
         """
@@ -303,8 +298,8 @@ class Mix(object):
                 wave += sound_wave
 
         if normalize_range and len(wave):
-            scale_factor = (normalize_range[1]-normalize_range[0]) / \
-                (wave.max()-wave.min())
+            scale_factor = (normalize_range[1] - normalize_range[0]) / \
+                           (wave.max() - wave.min())
 
             if scale_factor < 1.0:  # Wave clipping
                 if on_clip == 'scale':
@@ -318,7 +313,7 @@ class Mix(object):
 
         return wave
 
-
+    # noinspection PyProtectedMember
     def fft(self, t_start=0., t_end=0., samplerate=Sound._DEFAULT_SAMPLERATE,
             freq_range=None, freq_buckets=None):
         """
@@ -348,7 +343,7 @@ class Mix(object):
         import numpy as np
 
         if not freq_range:
-            freq_range = (0, int(samplerate/2))
+            freq_range = (0, int(samplerate / 2))
 
         wave = self.get_wave(t_start=t_start, t_end=t_end, samplerate=samplerate)
         fft = np.fft.fft(wave.reshape(len(wave)))
@@ -359,7 +354,6 @@ class Mix(object):
 
         return fft
 
-
     def duration(self):
         """
         :returns: The duration of the mix in seconds as duration of its longest
@@ -376,5 +370,4 @@ class Mix(object):
 
         return duration
 
-
 # vim:sw=4:ts=4:et:
diff --git a/platypush/plugins/sound/manifest.yaml b/platypush/plugins/sound/manifest.yaml
new file mode 100644
index 00000000..c833f0ac
--- /dev/null
+++ b/platypush/plugins/sound/manifest.yaml
@@ -0,0 +1,15 @@
+manifest:
+  events:
+    platypush.message.event.sound.SoundPlaybackPausedEvent: on playback pause
+    platypush.message.event.sound.SoundPlaybackStartedEvent: on playback start
+    platypush.message.event.sound.SoundPlaybackStoppedEvent: on playback stop
+    platypush.message.event.sound.SoundRecordingPausedEvent: on recording pause
+    platypush.message.event.sound.SoundRecordingStartedEvent: on recording start
+    platypush.message.event.sound.SoundRecordingStoppedEvent: on recording stop
+  install:
+    pip:
+    - sounddevice
+    - soundfile
+    - numpy
+  package: platypush.plugins.sound
+  type: plugin
diff --git a/platypush/plugins/ssh/__init__.py b/platypush/plugins/ssh/__init__.py
index caa096d8..8aef1dab 100644
--- a/platypush/plugins/ssh/__init__.py
+++ b/platypush/plugins/ssh/__init__.py
@@ -9,9 +9,14 @@ from binascii import hexlify
 from stat import S_ISDIR, S_ISREG, S_ISLNK, S_ISCHR, S_ISFIFO, S_ISSOCK, S_ISBLK, S_ISDOOR
 from typing import Optional, Dict, Tuple, List, Union, Any
 
-from paramiko import DSSKey, RSAKey, SSHClient, WarningPolicy, GSS_AUTH_AVAILABLE, SFTPClient
+from paramiko import DSSKey, RSAKey, SSHClient, WarningPolicy, SFTPClient
 from paramiko.py3compat import u
 
+try:
+    from paramiko import GSS_AUTH_AVAILABLE
+except ImportError:
+    from paramiko.ssh_gss import GSS_AUTH_AVAILABLE
+
 from platypush import Response
 from platypush.message.response.ssh import SSHKeygenResponse
 from platypush.plugins import Plugin, action
@@ -21,7 +26,7 @@ from platypush.plugins.ssh.tunnel.reverse import reverse_tunnel, close_tunnel
 
 class SshPlugin(Plugin):
     """
-    SSh plugin.
+    SSH plugin.
 
     Requires:
 
diff --git a/platypush/plugins/ssh/manifest.yaml b/platypush/plugins/ssh/manifest.yaml
new file mode 100644
index 00000000..62b91a40
--- /dev/null
+++ b/platypush/plugins/ssh/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - paramiko
+  package: platypush.plugins.ssh
+  type: plugin
diff --git a/platypush/plugins/stt/deepspeech.py b/platypush/plugins/stt/deepspeech/__init__.py
similarity index 100%
rename from platypush/plugins/stt/deepspeech.py
rename to platypush/plugins/stt/deepspeech/__init__.py
diff --git a/platypush/plugins/stt/deepspeech/manifest.yaml b/platypush/plugins/stt/deepspeech/manifest.yaml
new file mode 100644
index 00000000..8a07f779
--- /dev/null
+++ b/platypush/plugins/stt/deepspeech/manifest.yaml
@@ -0,0 +1,9 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - deepspeech
+    - numpy
+    - sounddevice
+  package: platypush.plugins.stt.deepspeech
+  type: plugin
diff --git a/platypush/plugins/stt/picovoice/hotword.py b/platypush/plugins/stt/picovoice/hotword/__init__.py
similarity index 100%
rename from platypush/plugins/stt/picovoice/hotword.py
rename to platypush/plugins/stt/picovoice/hotword/__init__.py
diff --git a/platypush/plugins/stt/picovoice/hotword/manifest.yaml b/platypush/plugins/stt/picovoice/hotword/manifest.yaml
new file mode 100644
index 00000000..f8e9d210
--- /dev/null
+++ b/platypush/plugins/stt/picovoice/hotword/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pvporcupine
+  package: platypush.plugins.stt.picovoice.hotword
+  type: plugin
diff --git a/platypush/plugins/stt/picovoice/speech.py b/platypush/plugins/stt/picovoice/speech/__init__.py
similarity index 100%
rename from platypush/plugins/stt/picovoice/speech.py
rename to platypush/plugins/stt/picovoice/speech/__init__.py
diff --git a/platypush/plugins/stt/picovoice/speech/manifest.yaml b/platypush/plugins/stt/picovoice/speech/manifest.yaml
new file mode 100644
index 00000000..0e7a01a8
--- /dev/null
+++ b/platypush/plugins/stt/picovoice/speech/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - cheetah
+  package: platypush.plugins.stt.picovoice.speech
+  type: plugin
diff --git a/platypush/plugins/sun.py b/platypush/plugins/sun/__init__.py
similarity index 100%
rename from platypush/plugins/sun.py
rename to platypush/plugins/sun/__init__.py
diff --git a/platypush/plugins/sun/manifest.yaml b/platypush/plugins/sun/manifest.yaml
new file mode 100644
index 00000000..b02a7cfe
--- /dev/null
+++ b/platypush/plugins/sun/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events:
+    platypush.message.event.sun.SunriseEvent: on sunrise.
+    platypush.message.event.sun.SunsetEvent: on sunset.
+  install:
+    pip: []
+  package: platypush.plugins.sun
+  type: plugin
diff --git a/platypush/plugins/switch/__init__.py b/platypush/plugins/switch/__init__.py
index aaef9440..e73513d9 100644
--- a/platypush/plugins/switch/__init__.py
+++ b/platypush/plugins/switch/__init__.py
@@ -1,9 +1,10 @@
+from abc import ABC, abstractmethod
 from typing import List, Union
 
 from platypush.plugins import Plugin, action
 
 
-class SwitchPlugin(Plugin):
+class SwitchPlugin(Plugin, ABC):
     """
     Abstract class for interacting with switch devices
     """
@@ -12,16 +13,19 @@ class SwitchPlugin(Plugin):
         super().__init__(**kwargs)
 
     @action
+    @abstractmethod
     def on(self, device, *args, **kwargs):
         """ Turn the device on """
         raise NotImplementedError()
 
     @action
+    @abstractmethod
     def off(self, device, *args, **kwargs):
         """ Turn the device off """
         raise NotImplementedError()
 
     @action
+    @abstractmethod
     def toggle(self, device, *args, **kwargs):
         """ Toggle the device status (on/off) """
         raise NotImplementedError()
@@ -52,6 +56,7 @@ class SwitchPlugin(Plugin):
         return self.switch_status(device)
 
     @property
+    @abstractmethod
     def switches(self) -> List[dict]:
         """
         :return: .. schema:: switch.SwitchStatusSchema(many=True)
diff --git a/platypush/plugins/switch/tplink.py b/platypush/plugins/switch/tplink/__init__.py
similarity index 100%
rename from platypush/plugins/switch/tplink.py
rename to platypush/plugins/switch/tplink/__init__.py
diff --git a/platypush/plugins/switch/tplink/manifest.yaml b/platypush/plugins/switch/tplink/manifest.yaml
new file mode 100644
index 00000000..71335f39
--- /dev/null
+++ b/platypush/plugins/switch/tplink/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - pyHS100
+  package: platypush.plugins.switch.tplink
+  type: plugin
diff --git a/platypush/plugins/switch/wemo/__init__.py b/platypush/plugins/switch/wemo/__init__.py
index 6df63d43..312c1c31 100644
--- a/platypush/plugins/switch/wemo/__init__.py
+++ b/platypush/plugins/switch/wemo/__init__.py
@@ -12,10 +12,6 @@ class SwitchWemoPlugin(SwitchPlugin):
     """
     Plugin to control a Belkin WeMo smart switches
     (https://www.belkin.com/us/Products/home-automation/c/wemo-home-automation/)
-
-    Requires:
-
-        * **requests** (``pip install requests``)
     """
 
     _default_port = 49153
diff --git a/platypush/plugins/switch/wemo/manifest.yaml b/platypush/plugins/switch/wemo/manifest.yaml
new file mode 100644
index 00000000..13902874
--- /dev/null
+++ b/platypush/plugins/switch/wemo/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.switch.wemo
+  type: plugin
diff --git a/platypush/plugins/switchbot/bluetooth.py b/platypush/plugins/switchbot/bluetooth/__init__.py
similarity index 100%
rename from platypush/plugins/switchbot/bluetooth.py
rename to platypush/plugins/switchbot/bluetooth/__init__.py
diff --git a/platypush/plugins/switchbot/bluetooth/manifest.yaml b/platypush/plugins/switchbot/bluetooth/manifest.yaml
new file mode 100644
index 00000000..1e362e13
--- /dev/null
+++ b/platypush/plugins/switchbot/bluetooth/manifest.yaml
@@ -0,0 +1,13 @@
+manifest:
+  events: {}
+  install:
+    pip:
+      - pybluez
+      - gattlib
+    apt:
+      - libboost-python-dev
+      - libboost-thread-dev
+    pacman:
+      - boost-libs
+  package: platypush.plugins.switchbot.bluetooth
+  type: plugin
diff --git a/platypush/plugins/switchbot/manifest.yaml b/platypush/plugins/switchbot/manifest.yaml
new file mode 100644
index 00000000..368fb344
--- /dev/null
+++ b/platypush/plugins/switchbot/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.switchbot
+  type: plugin
diff --git a/platypush/plugins/system/manifest.yaml b/platypush/plugins/system/manifest.yaml
new file mode 100644
index 00000000..bf404b99
--- /dev/null
+++ b/platypush/plugins/system/manifest.yaml
@@ -0,0 +1,8 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - py-cpuinfo
+    - psutil
+  package: platypush.plugins.system
+  type: plugin
diff --git a/platypush/plugins/tcp.py b/platypush/plugins/tcp/__init__.py
similarity index 100%
rename from platypush/plugins/tcp.py
rename to platypush/plugins/tcp/__init__.py
diff --git a/platypush/plugins/tcp/manifest.yaml b/platypush/plugins/tcp/manifest.yaml
new file mode 100644
index 00000000..60771e97
--- /dev/null
+++ b/platypush/plugins/tcp/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.tcp
+  type: plugin
diff --git a/platypush/plugins/tensorflow/manifest.yaml b/platypush/plugins/tensorflow/manifest.yaml
new file mode 100644
index 00000000..f42dbc48
--- /dev/null
+++ b/platypush/plugins/tensorflow/manifest.yaml
@@ -0,0 +1,22 @@
+manifest:
+  events:
+    platypush.message.event.tensorflow.TensorflowBatchEndedEvent: when a the processing
+      of a Tensorflow model training/evaluation batch ends.
+    platypush.message.event.tensorflow.TensorflowBatchStartedEvent: when a Tensorflow
+      model training/evaluation batch starts being processed.
+    platypush.message.event.tensorflow.TensorflowEpochEndedEvent: when a Tensorflow
+      model training/evaluation epoch ends.
+    platypush.message.event.tensorflow.TensorflowEpochStartedEvent: when a Tensorflow
+      model training/evaluation epoch begins.
+    platypush.message.event.tensorflow.TensorflowTrainEndedEvent: when the training
+      phase of a Tensorflow model ends.
+    platypush.message.event.tensorflow.TensorflowTrainStartedEvent: when a Tensorflow
+      model starts being trained.
+  install:
+    pip:
+    - numpy
+    - pandas
+    - tensorflow
+    - keras
+  package: platypush.plugins.tensorflow
+  type: plugin
diff --git a/platypush/plugins/todoist.py b/platypush/plugins/todoist/__init__.py
similarity index 100%
rename from platypush/plugins/todoist.py
rename to platypush/plugins/todoist/__init__.py
diff --git a/platypush/plugins/todoist/manifest.yaml b/platypush/plugins/todoist/manifest.yaml
new file mode 100644
index 00000000..689eaa2a
--- /dev/null
+++ b/platypush/plugins/todoist/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - todoist-python
+  package: platypush.plugins.todoist
+  type: plugin
diff --git a/platypush/plugins/torrent.py b/platypush/plugins/torrent/__init__.py
similarity index 99%
rename from platypush/plugins/torrent.py
rename to platypush/plugins/torrent/__init__.py
index 5ec289da..db9e5aa5 100644
--- a/platypush/plugins/torrent.py
+++ b/platypush/plugins/torrent/__init__.py
@@ -21,8 +21,8 @@ class TorrentPlugin(Plugin):
 
     Requires:
 
-        * **python-libtorrent** (``pip install git+https://github.com/arvidn/libtorrent``)
-        * **requests** (``pip install requests``) [optional] for torrent info URL download
+        * **python-libtorrent-bin** (``pip install python-libtorrent-bin``)
+
     """
 
     # Wait time in seconds between two torrent transfer checks
diff --git a/platypush/plugins/torrent/manifest.yaml b/platypush/plugins/torrent/manifest.yaml
new file mode 100644
index 00000000..86adf245
--- /dev/null
+++ b/platypush/plugins/torrent/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - python-libtorrent-bin
+  package: platypush.plugins.torrent
+  type: plugin
diff --git a/platypush/plugins/travisci.py b/platypush/plugins/travisci/__init__.py
similarity index 100%
rename from platypush/plugins/travisci.py
rename to platypush/plugins/travisci/__init__.py
diff --git a/platypush/plugins/travisci/manifest.yaml b/platypush/plugins/travisci/manifest.yaml
new file mode 100644
index 00000000..1da62520
--- /dev/null
+++ b/platypush/plugins/travisci/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.travisci
+  type: plugin
diff --git a/platypush/plugins/trello.py b/platypush/plugins/trello/__init__.py
similarity index 100%
rename from platypush/plugins/trello.py
rename to platypush/plugins/trello/__init__.py
diff --git a/platypush/plugins/trello/manifest.yaml b/platypush/plugins/trello/manifest.yaml
new file mode 100644
index 00000000..c9536915
--- /dev/null
+++ b/platypush/plugins/trello/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - py-trello
+  package: platypush.plugins.trello
+  type: plugin
diff --git a/platypush/plugins/tts/__init__.py b/platypush/plugins/tts/__init__.py
index 398c2316..f09fc4ae 100644
--- a/platypush/plugins/tts/__init__.py
+++ b/platypush/plugins/tts/__init__.py
@@ -65,7 +65,7 @@ class TtsPlugin(Plugin):
         """
         language = language or self.language
         player_args = player_args or self.player_args
-        url = 'http://translate.google.com/translate_tts?{}'.format(
+        url = 'https://translate.google.com/translate_tts?{}'.format(
             urllib.parse.urlencode({
                 'ie': 'UTF-8',
                 'client': 'tw-ob',
diff --git a/platypush/plugins/tts/google.py b/platypush/plugins/tts/google/__init__.py
similarity index 96%
rename from platypush/plugins/tts/google.py
rename to platypush/plugins/tts/google/__init__.py
index 60a90303..c3965c56 100644
--- a/platypush/plugins/tts/google.py
+++ b/platypush/plugins/tts/google/__init__.py
@@ -14,8 +14,7 @@ class TtsGooglePlugin(TtsPlugin):
 
     Requires:
 
-        * **google-cloud-texttospeech** - ``pip install google-cloud-texttospeech``
-        * **mplayer** - see your distribution docs on how to install the mplayer package
+        * **google-cloud-texttospeech** (``pip install google-cloud-texttospeech``)
 
     """
 
diff --git a/platypush/plugins/tts/google/manifest.yaml b/platypush/plugins/tts/google/manifest.yaml
new file mode 100644
index 00000000..029a4f37
--- /dev/null
+++ b/platypush/plugins/tts/google/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - google-cloud-texttospeech
+  package: platypush.plugins.tts.google
+  type: plugin
diff --git a/platypush/plugins/tts/manifest.yaml b/platypush/plugins/tts/manifest.yaml
new file mode 100644
index 00000000..9748a54e
--- /dev/null
+++ b/platypush/plugins/tts/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.tts
+  type: plugin
diff --git a/platypush/plugins/tv/samsung/ws.py b/platypush/plugins/tv/samsung/ws/__init__.py
similarity index 100%
rename from platypush/plugins/tv/samsung/ws.py
rename to platypush/plugins/tv/samsung/ws/__init__.py
diff --git a/platypush/plugins/tv/samsung/ws/manifest.yaml b/platypush/plugins/tv/samsung/ws/manifest.yaml
new file mode 100644
index 00000000..8e28c094
--- /dev/null
+++ b/platypush/plugins/tv/samsung/ws/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - samsungtvws
+  package: platypush.plugins.tv.samsung.ws
+  type: plugin
diff --git a/platypush/plugins/twilio.py b/platypush/plugins/twilio/__init__.py
similarity index 100%
rename from platypush/plugins/twilio.py
rename to platypush/plugins/twilio/__init__.py
diff --git a/platypush/plugins/twilio/manifest.yaml b/platypush/plugins/twilio/manifest.yaml
new file mode 100644
index 00000000..fa160f53
--- /dev/null
+++ b/platypush/plugins/twilio/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - twilio
+  package: platypush.plugins.twilio
+  type: plugin
diff --git a/platypush/plugins/udp.py b/platypush/plugins/udp/__init__.py
similarity index 100%
rename from platypush/plugins/udp.py
rename to platypush/plugins/udp/__init__.py
diff --git a/platypush/plugins/udp/manifest.yaml b/platypush/plugins/udp/manifest.yaml
new file mode 100644
index 00000000..8f61c0d8
--- /dev/null
+++ b/platypush/plugins/udp/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.udp
+  type: plugin
diff --git a/platypush/plugins/user.py b/platypush/plugins/user/__init__.py
similarity index 100%
rename from platypush/plugins/user.py
rename to platypush/plugins/user/__init__.py
diff --git a/platypush/plugins/user/manifest.yaml b/platypush/plugins/user/manifest.yaml
new file mode 100644
index 00000000..6cddf0c0
--- /dev/null
+++ b/platypush/plugins/user/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.user
+  type: plugin
diff --git a/platypush/plugins/utils.py b/platypush/plugins/utils/__init__.py
similarity index 100%
rename from platypush/plugins/utils.py
rename to platypush/plugins/utils/__init__.py
diff --git a/platypush/plugins/utils/manifest.yaml b/platypush/plugins/utils/manifest.yaml
new file mode 100644
index 00000000..b78a4b2d
--- /dev/null
+++ b/platypush/plugins/utils/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.utils
+  type: plugin
diff --git a/platypush/plugins/variable.py b/platypush/plugins/variable/__init__.py
similarity index 97%
rename from platypush/plugins/variable.py
rename to platypush/plugins/variable/__init__.py
index 7810507d..0346ba88 100644
--- a/platypush/plugins/variable.py
+++ b/platypush/plugins/variable/__init__.py
@@ -9,11 +9,6 @@ class VariablePlugin(Plugin):
     accessed across your tasks. It requires the :mod:`platypush.plugins.db`
     and :mod:`platypush.plugins.redis` plugins to be enabled, as the variables
     will be stored either persisted on a local database or on the local Redis instance.
-
-    Requires:
-
-        * **sqlalchemy** (``pip install sqlalchemy``)
-        * **redis** (``pip install redis``)
     """
 
     _variable_table_name = 'variable'
diff --git a/platypush/plugins/variable/manifest.yaml b/platypush/plugins/variable/manifest.yaml
new file mode 100644
index 00000000..5b2acc55
--- /dev/null
+++ b/platypush/plugins/variable/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.variable
+  type: plugin
diff --git a/platypush/plugins/weather/__init__.py b/platypush/plugins/weather/__init__.py
index 13544ae7..95a0ce59 100644
--- a/platypush/plugins/weather/__init__.py
+++ b/platypush/plugins/weather/__init__.py
@@ -1,4 +1,4 @@
-from abc import ABC
+from abc import ABC, abstractmethod
 
 from platypush.plugins import Plugin, action
 
@@ -9,5 +9,6 @@ class WeatherPlugin(Plugin, ABC):
     """
 
     @action
+    @abstractmethod
     def get_current_weather(self, *args, **kwargs):
         raise NotImplementedError
diff --git a/platypush/plugins/weather/buienradar.py b/platypush/plugins/weather/buienradar/__init__.py
similarity index 100%
rename from platypush/plugins/weather/buienradar.py
rename to platypush/plugins/weather/buienradar/__init__.py
diff --git a/platypush/plugins/weather/buienradar/manifest.yaml b/platypush/plugins/weather/buienradar/manifest.yaml
new file mode 100644
index 00000000..ab494de4
--- /dev/null
+++ b/platypush/plugins/weather/buienradar/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - buienradar
+  package: platypush.plugins.weather.buienradar
+  type: plugin
diff --git a/platypush/plugins/weather/darksky.py b/platypush/plugins/weather/darksky/__init__.py
similarity index 100%
rename from platypush/plugins/weather/darksky.py
rename to platypush/plugins/weather/darksky/__init__.py
diff --git a/platypush/plugins/weather/darksky/manifest.yaml b/platypush/plugins/weather/darksky/manifest.yaml
new file mode 100644
index 00000000..5d592f0e
--- /dev/null
+++ b/platypush/plugins/weather/darksky/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.weather.darksky
+  type: plugin
diff --git a/platypush/plugins/weather/openweathermap.py b/platypush/plugins/weather/openweathermap/__init__.py
similarity index 98%
rename from platypush/plugins/weather/openweathermap.py
rename to platypush/plugins/weather/openweathermap/__init__.py
index 457c5331..5046ad2c 100644
--- a/platypush/plugins/weather/openweathermap.py
+++ b/platypush/plugins/weather/openweathermap/__init__.py
@@ -22,7 +22,7 @@ class WeatherOpenweathermapPlugin(HttpRequestPlugin, WeatherPlugin):
         :param location: If set, then this location will be used by default for weather lookup. If multiple locations
             share the same name you can disambiguate by specifying the country code as well - e.g. ``London,GB``.
         :param city_id: If set, then this city ID will be used by default for weather lookup. The full list of city IDs
-            is available `here <http://bulk.openweathermap.org/sample/>`_.
+            is available `here <https://bulk.openweathermap.org/sample/>`_.
         :param lat: If lat/long are set, then the weather by default will be retrieved for the specified geo location.
         :param long: If lat/long are set, then the weather by default will be retrieved for the specified geo location.
         :param zip_code: If set, then this ZIP code (should be in the form ``zip,country_code``) will be used by default
diff --git a/platypush/plugins/weather/openweathermap/manifest.yaml b/platypush/plugins/weather/openweathermap/manifest.yaml
new file mode 100644
index 00000000..9de6ca3f
--- /dev/null
+++ b/platypush/plugins/weather/openweathermap/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.weather.openweathermap
+  type: plugin
diff --git a/platypush/plugins/websocket.py b/platypush/plugins/websocket/__init__.py
similarity index 91%
rename from platypush/plugins/websocket.py
rename to platypush/plugins/websocket/__init__.py
index 2a29a336..0941e376 100644
--- a/platypush/plugins/websocket.py
+++ b/platypush/plugins/websocket/__init__.py
@@ -1,6 +1,11 @@
 import json
 import websockets
 
+try:
+    from websockets.exceptions import ConnectionClosed
+except ImportError:
+    from websockets import ConnectionClosed
+
 from platypush.context import get_or_create_event_loop
 from platypush.message import Message
 from platypush.plugins import Plugin, action
@@ -9,11 +14,7 @@ from platypush.utils import get_ssl_client_context
 
 class WebsocketPlugin(Plugin):
     """
-    Plugin to send messages over a websocket connection
-
-    Requires:
-
-        * **websockets** (``pip install websockets``)
+    Plugin to send messages over a websocket connection.
     """
 
     def __init__(self, **kwargs):
@@ -54,7 +55,7 @@ class WebsocketPlugin(Plugin):
             async with websockets.connect(url, **websocket_args) as websocket:
                 try:
                     await websocket.send(str(msg))
-                except websockets.exceptions.ConnectionClosed as err:
+                except ConnectionClosed as err:
                     self.logger.warning('Error on websocket {}: {}'.
                                         format(url, err))
 
diff --git a/platypush/plugins/websocket/manifest.yaml b/platypush/plugins/websocket/manifest.yaml
new file mode 100644
index 00000000..8c95c60e
--- /dev/null
+++ b/platypush/plugins/websocket/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.websocket
+  type: plugin
diff --git a/platypush/plugins/wiimote.py b/platypush/plugins/wiimote/__init__.py
similarity index 100%
rename from platypush/plugins/wiimote.py
rename to platypush/plugins/wiimote/__init__.py
diff --git a/platypush/plugins/wiimote/manifest.yaml b/platypush/plugins/wiimote/manifest.yaml
new file mode 100644
index 00000000..80d570e8
--- /dev/null
+++ b/platypush/plugins/wiimote/manifest.yaml
@@ -0,0 +1,6 @@
+manifest:
+  events: {}
+  install:
+    pip: []
+  package: platypush.plugins.wiimote
+  type: plugin
diff --git a/platypush/plugins/zeroconf.py b/platypush/plugins/zeroconf/__init__.py
similarity index 100%
rename from platypush/plugins/zeroconf.py
rename to platypush/plugins/zeroconf/__init__.py
diff --git a/platypush/plugins/zeroconf/manifest.yaml b/platypush/plugins/zeroconf/manifest.yaml
new file mode 100644
index 00000000..695516fc
--- /dev/null
+++ b/platypush/plugins/zeroconf/manifest.yaml
@@ -0,0 +1,13 @@
+manifest:
+  events:
+    platypush.message.event.zeroconf.ZeroconfServiceAddedEvent: when a new service
+      is discovered.
+    platypush.message.event.zeroconf.ZeroconfServiceRemovedEvent: when a service is
+      removed.
+    platypush.message.event.zeroconf.ZeroconfServiceUpdatedEvent: when a service is
+      updated.
+  install:
+    pip:
+    - zeroconf
+  package: platypush.plugins.zeroconf
+  type: plugin
diff --git a/platypush/plugins/zigbee/mqtt.py b/platypush/plugins/zigbee/mqtt/__init__.py
similarity index 100%
rename from platypush/plugins/zigbee/mqtt.py
rename to platypush/plugins/zigbee/mqtt/__init__.py
diff --git a/platypush/plugins/zigbee/mqtt/manifest.yaml b/platypush/plugins/zigbee/mqtt/manifest.yaml
new file mode 100644
index 00000000..3c57ec8d
--- /dev/null
+++ b/platypush/plugins/zigbee/mqtt/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - paho-mqtt
+  package: platypush.plugins.zigbee.mqtt
+  type: plugin
diff --git a/platypush/plugins/zwave/_base.py b/platypush/plugins/zwave/_base.py
index 0099b9e8..76a98479 100644
--- a/platypush/plugins/zwave/_base.py
+++ b/platypush/plugins/zwave/_base.py
@@ -1,23 +1,26 @@
-from abc import ABC
+from abc import ABC, abstractmethod
 from typing import Any, Dict, Optional, List, Union
 
 from platypush.plugins import action
 from platypush.plugins.switch import SwitchPlugin
 
 
-class ZwaveBasePlugin(ABC, SwitchPlugin):
+class ZwaveBasePlugin(SwitchPlugin, ABC):
     """
     Base class for Z-Wave plugins.
     """
 
+    @abstractmethod
     @action
     def start_network(self):
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def stop_network(self):
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def status(self) -> Dict[str, Any]:
         """
@@ -25,6 +28,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def add_node(self, *args, **kwargs):
         """
@@ -32,6 +36,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def remove_node(self):
         """
@@ -39,6 +44,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def remove_failed_node(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs):
         """
@@ -49,6 +55,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def replace_failed_node(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs):
         """
@@ -59,6 +66,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def replication_send(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs):
         """
@@ -69,6 +77,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def request_network_update(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs):
         """
@@ -79,6 +88,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def request_node_neighbour_update(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs):
         """
@@ -89,6 +99,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_nodes(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs) -> Dict[str, Any]:
         """
@@ -99,6 +110,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_node_stats(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs) \
             -> Dict[str, Any]:
@@ -110,6 +122,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def set_node_name(self, new_name: str, node_id: Optional[int] = None, node_name: Optional[str] = None):
         """
@@ -121,6 +134,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def set_node_product_name(self, product_name: str, node_id: Optional[int] = None, node_name: Optional[str] = None,
                               **kwargs):
@@ -133,6 +147,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def set_node_manufacturer_name(self, manufacturer_name: str, node_id: Optional[int] = None,
                                    node_name: Optional[str] = None, **kwargs):
@@ -145,6 +160,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def set_node_location(self, location: str, node_id: Optional[int] = None, node_name: Optional[str] = None,
                           **kwargs):
@@ -157,6 +173,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def cancel_command(self):
         """
@@ -164,6 +181,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def kill_command(self):
         """
@@ -171,6 +189,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def set_controller_name(self, name: str, **kwargs):
         """
@@ -180,6 +199,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_capabilities(self, **kwargs) -> List[str]:
         """
@@ -187,6 +207,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def receive_configuration(self, **kwargs):
         """
@@ -194,6 +215,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def transfer_primary_role(self, **kwargs):
         """
@@ -202,6 +224,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def heal(self, refresh_routes: bool = False, **kwargs):
         """
@@ -211,6 +234,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def switch_all(self, state: bool, **kwargs):
         """
@@ -220,6 +244,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def test(self, count: int = 1, **kwargs):
         """
@@ -229,6 +254,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_value(self, value_id: Optional[int] = None, id_on_network: Optional[str] = None,
                   value_label: Optional[str] = None, node_id: Optional[int] = None, node_name: Optional[str] = None,
@@ -244,6 +270,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def set_value(self, data, value_id: Optional[int] = None, id_on_network: Optional[str] = None,
                   value_label: Optional[str] = None, node_id: Optional[int] = None, node_name: Optional[str] = None,
@@ -260,6 +287,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def set_value_label(self, new_label: str, value_id: Optional[int] = None, id_on_network: Optional[str] = None,
                         value_label: Optional[str] = None, node_id: Optional[int] = None,
@@ -276,6 +304,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def node_add_value(self, value_id: Optional[int] = None, id_on_network: Optional[str] = None,
                        value_label: Optional[str] = None, node_id: Optional[int] = None,
@@ -291,6 +320,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def node_remove_value(self, value_id: Optional[int] = None, id_on_network: Optional[str] = None,
                           value_label: Optional[str] = None, node_id: Optional[int] = None,
@@ -306,6 +336,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def node_heal(self, node_id: Optional[int] = None, node_name: Optional[str] = None, refresh_routes: bool = False,
                   **kwargs):
@@ -318,6 +349,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def node_update_neighbours(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs):
         """
@@ -328,6 +360,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def node_network_update(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs):
         """
@@ -338,6 +371,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def node_refresh_info(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs):
         """
@@ -348,6 +382,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_dimmers(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs) -> Dict[int, Any]:
         """
@@ -358,6 +393,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_node_config(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs) \
             -> Dict[int, Any]:
@@ -369,6 +405,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_battery_levels(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs) \
             -> Dict[int, Any]:
@@ -380,6 +417,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_power_levels(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs) \
             -> Dict[int, Any]:
@@ -391,6 +429,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_bulbs(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs) -> Dict[int, Any]:
         """
@@ -401,6 +440,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_switches(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs) -> Dict[int, Any]:
         """
@@ -411,6 +451,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_sensors(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs) -> Dict[int, Any]:
         """
@@ -421,6 +462,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_doorlocks(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs) -> Dict[int, Any]:
         """
@@ -431,6 +473,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_usercodes(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs) -> Dict[int, Any]:
         """
@@ -441,6 +484,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_thermostats(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs) \
             -> Dict[int, Any]:
@@ -452,6 +496,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_protections(self, node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs) \
             -> Dict[int, Any]:
@@ -463,6 +508,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_groups(self, **kwargs) -> Dict[int, Any]:
         """
@@ -470,6 +516,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_scenes(self, **kwargs) -> Dict[str, Any]:
         """
@@ -477,6 +524,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def create_scene(self, label: str, **kwargs):
         """
@@ -486,6 +534,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def remove_scene(self, scene_id: Optional[int] = None, scene_label: Optional[str] = None, **kwargs):
         """
@@ -496,6 +545,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def activate_scene(self, scene_id: Optional[int] = None, scene_label: Optional[str] = None, **kwargs):
         """
@@ -506,6 +556,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def set_scene_label(self, new_label: str, scene_id: Optional[int] = None, scene_label: Optional[str] = None,
                         **kwargs):
@@ -518,6 +569,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def scene_add_value(self, data: Optional[Any] = None,
                         value_id: Optional[int] = None, id_on_network: Optional[str] = None,
@@ -538,6 +590,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def scene_remove_value(self, value_id: Optional[int] = None, id_on_network: Optional[str] = None,
                            value_label: Optional[str] = None, scene_id: Optional[int] = None,
@@ -556,6 +609,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_scene_values(self, scene_id: Optional[int] = None, scene_label: Optional[str] = None, **kwargs) -> dict:
         """
@@ -567,6 +621,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def get_scene_values(self, scene_id: Optional[int] = None, scene_label: Optional[str] = None, **kwargs) -> dict:
         """
@@ -577,6 +632,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def create_button(self, button_id: Union[int, str], node_id: Optional[int] = None, node_name: Optional[str] = None,
                       **kwargs):
@@ -589,6 +645,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def delete_button(self, button_id: Union[int, str], node_id: Optional[int] = None, node_name: Optional[str] = None,
                       **kwargs):
@@ -601,6 +658,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def add_node_to_group(self, group_index: Optional[int] = None, group_label: Optional[str] = None,
                           node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs):
@@ -614,6 +672,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def remove_node_from_group(self, group_index: Optional[int] = None, group_label: Optional[str] = None,
                                node_id: Optional[int] = None, node_name: Optional[str] = None, **kwargs):
@@ -627,6 +686,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def create_new_primary(self, **kwargs):
         """
@@ -634,6 +694,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def hard_reset(self, **kwargs):
         """
@@ -642,6 +703,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def soft_reset(self, **kwargs):
         """
@@ -650,6 +712,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def write_config(self, **kwargs):
         """
@@ -657,6 +720,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def on(self, device: str, *args, **kwargs):
         """
@@ -666,6 +730,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def off(self, device: str, *args, **kwargs):
         """
@@ -675,6 +740,7 @@ class ZwaveBasePlugin(ABC, SwitchPlugin):
         """
         raise NotImplementedError
 
+    @abstractmethod
     @action
     def toggle(self, device: str, *args, **kwargs):
         """
diff --git a/platypush/plugins/zwave/manifest.yaml b/platypush/plugins/zwave/manifest.yaml
new file mode 100644
index 00000000..101c95c4
--- /dev/null
+++ b/platypush/plugins/zwave/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - python-openzwave
+  package: platypush.plugins.zwave
+  type: plugin
diff --git a/platypush/plugins/zwave/mqtt.py b/platypush/plugins/zwave/mqtt/__init__.py
similarity index 100%
rename from platypush/plugins/zwave/mqtt.py
rename to platypush/plugins/zwave/mqtt/__init__.py
diff --git a/platypush/plugins/zwave/mqtt/manifest.yaml b/platypush/plugins/zwave/mqtt/manifest.yaml
new file mode 100644
index 00000000..9cce3fd0
--- /dev/null
+++ b/platypush/plugins/zwave/mqtt/manifest.yaml
@@ -0,0 +1,7 @@
+manifest:
+  events: {}
+  install:
+    pip:
+    - paho-mqtt
+  package: platypush.plugins.zwave.mqtt
+  type: plugin
diff --git a/platypush/user/__init__.py b/platypush/user/__init__.py
index c519799b..981a4e46 100644
--- a/platypush/user/__init__.py
+++ b/platypush/user/__init__.py
@@ -7,6 +7,11 @@ from typing import Optional, Dict
 import bcrypt
 import jwt
 
+try:
+    from jwt.exceptions import PyJWTError
+except ImportError:
+    from jwt import PyJWTError
+
 from sqlalchemy import Column, Integer, String, DateTime, ForeignKey
 from sqlalchemy.orm import sessionmaker, scoped_session
 from sqlalchemy.ext.declarative import declarative_base
@@ -150,11 +155,19 @@ class UserManager:
 
     @staticmethod
     def _encrypt_password(pwd):
-        return bcrypt.hashpw(pwd.encode(), bcrypt.gensalt(12))
+        if isinstance(pwd, str):
+            pwd = pwd.encode()
+        return bcrypt.hashpw(pwd, bcrypt.gensalt(12)).decode()
+
+    @classmethod
+    def _check_password(cls, pwd, hashed_pwd):
+        return bcrypt.checkpw(cls._to_bytes(pwd), cls._to_bytes(hashed_pwd))
 
     @staticmethod
-    def _check_password(pwd, hashed_pwd):
-        return bcrypt.checkpw(pwd.encode(), hashed_pwd)
+    def _to_bytes(data) -> bytes:
+        if isinstance(data, str):
+            data = data.encode()
+        return data
 
     @staticmethod
     def generate_session_token():
@@ -218,7 +231,7 @@ class UserManager:
 
         try:
             payload = jwt.decode(token.encode(), pub_key, algorithms=['RS256'])
-        except jwt.exceptions.PyJWTError as e:
+        except PyJWTError as e:
             raise InvalidJWTTokenException(str(e))
 
         expires_at = payload.get('expires_at')
diff --git a/platypush/utils/__init__.py b/platypush/utils/__init__.py
index 2c337677..1ffc7683 100644
--- a/platypush/utils/__init__.py
+++ b/platypush/utils/__init__.py
@@ -138,22 +138,27 @@ def clear_timeout():
 
 
 def get_hash(s):
-    """ Get the SHA256 hash hexdigest of a string input """
+    """ Get the SHA256 hash hex digest of a string input """
     return hashlib.sha256(s.encode('utf-8')).hexdigest()
 
 
 def get_decorators(cls, climb_class_hierarchy=False):
     """
     Get the decorators of a class as a {"decorator_name": [list of methods]} dictionary
-    :param climb_class_hierarchy: If set to True (default: False), it will search return the decorators in the parent classes as well
+
+    :param cls: Class type
+    :param climb_class_hierarchy: If set to True (default: False), it will search return the decorators in the parent
+        classes as well
     :type climb_class_hierarchy: bool
     """
 
     decorators = {}
 
+    # noinspection PyPep8Naming
     def visit_FunctionDef(node):
         for n in node.decorator_list:
             if isinstance(n, ast.Call):
+                # noinspection PyUnresolvedReferences
                 name = n.func.attr if isinstance(n.func, ast.Attribute) else n.func.id
             else:
                 name = n.attr if isinstance(n, ast.Attribute) else n.id
@@ -228,6 +233,7 @@ def get_ssl_client_context(ssl_cert=None, ssl_key=None, ssl_cafile=None,
                             ssl_cert=ssl_cert, ssl_key=ssl_key,
                             ssl_cafile=ssl_cafile, ssl_capath=ssl_capath)
 
+
 def set_thread_name(name):
     global logger
 
@@ -263,7 +269,7 @@ def find_files_by_ext(directory, *exts):
     result = []
 
     for root, dirs, files in os.walk(directory):
-        for i in range(min_len, max_len+1):
+        for i in range(min_len, max_len + 1):
             result += [f for f in files if f[-i:] in exts]
 
     return result
@@ -296,6 +302,7 @@ def get_mime_type(resource):
     if resource.startswith('file://'):
         resource = resource[len('file://'):]
 
+    # noinspection HttpUrlsUsage
     if resource.startswith('http://') or resource.startswith('https://'):
         with urllib.request.urlopen(resource) as response:
             return response.info().get_content_type()
@@ -444,5 +451,4 @@ def get_redis() -> Redis:
     from platypush.config import Config
     return Redis(**(Config.get('backend.redis') or {}).get('redis_args', {}))
 
-
 # vim:sw=4:ts=4:et:
diff --git a/platypush/utils/manifest.py b/platypush/utils/manifest.py
new file mode 100644
index 00000000..b26573e7
--- /dev/null
+++ b/platypush/utils/manifest.py
@@ -0,0 +1,200 @@
+import enum
+import inspect
+import json
+import logging
+import os
+import pathlib
+import shutil
+import yaml
+
+from abc import ABC, abstractmethod
+from typing import Optional, Iterable, Mapping, Callable, Type
+
+supported_package_managers = {
+    'pacman': 'pacman -S',
+    'apt': 'apt-get install',
+}
+
+_available_package_manager = None
+
+
+class ManifestType(enum.Enum):
+    PLUGIN = 'plugin'
+    BACKEND = 'backend'
+
+
+class Manifest(ABC):
+    """
+    Base class for plugin/backend manifests.
+    """
+    def __init__(self, package: str, description: Optional[str] = None,
+                 install: Optional[Iterable[str]] = None, events: Optional[Mapping] = None, **_):
+        self.description = description
+        self.install = install or {}
+        self.events = events or {}
+        self.logger = logging.getLogger(__name__)
+        self.package = package
+        self.component_name = '.'.join(package.split('.')[2:])
+        self.component = None
+
+    @classmethod
+    @property
+    @abstractmethod
+    def component_getter(self) -> Callable[[str], object]:
+        raise NotImplementedError
+
+    @classmethod
+    def from_file(cls, filename: str) -> "Manifest":
+        with open(str(filename), 'r') as f:
+            manifest = yaml.safe_load(f).get('manifest', {})
+
+        assert 'type' in manifest, f'Manifest file {filename} has no type field'
+        comp_type = ManifestType(manifest.pop('type'))
+        manifest_class = _manifest_class_by_type[comp_type]
+        return manifest_class(**manifest)
+
+    @classmethod
+    def from_class(cls, clazz) -> "Manifest":
+        return cls.from_file(os.path.dirname(inspect.getfile(clazz)))
+
+    @classmethod
+    def from_component(cls, comp) -> "Manifest":
+        return cls.from_class(comp.__class__)
+
+    def get_component(self):
+        try:
+            self.component = self.component_getter(self.component_name)
+        except Exception as e:
+            self.logger.warning(f'Could not load {self.component_name}: {e}')
+
+        return self.component
+
+    def __repr__(self):
+        return json.dumps({
+            'description': self.description,
+            'install': self.install,
+            'events': self.events,
+            'type': _manifest_type_by_class[self.__class__].value,
+            'package': self.package,
+            'component_name': self.component_name,
+        })
+
+
+class PluginManifest(Manifest):
+    @classmethod
+    @property
+    def component_getter(self):
+        from platypush.context import get_plugin
+        return get_plugin
+
+
+class BackendManifest(Manifest):
+    @classmethod
+    @property
+    def component_getter(self):
+        from platypush.context import get_backend
+        return get_backend
+
+
+_manifest_class_by_type: Mapping[ManifestType, Type[Manifest]] = {
+    ManifestType.PLUGIN: PluginManifest,
+    ManifestType.BACKEND: BackendManifest,
+}
+
+_manifest_type_by_class: Mapping[Type[Manifest], ManifestType] = {
+    cls: t for t, cls in _manifest_class_by_type.items()
+}
+
+
+def scan_manifests(base_class: Type) -> Iterable[str]:
+    for mf in pathlib.Path(os.path.dirname(inspect.getfile(base_class))).rglob('manifest.yaml'):
+        yield str(mf)
+
+
+def get_manifests(base_class: Type) -> Iterable[Manifest]:
+    return [
+        Manifest.from_file(mf)
+        for mf in scan_manifests(base_class)
+    ]
+
+
+def get_components(base_class: Type) -> Iterable:
+    manifests = get_manifests(base_class)
+    components = {mf.get_component() for mf in manifests}
+    return {comp for comp in components if comp is not None}
+
+
+def get_manifests_from_conf(conf_file: Optional[str] = None) -> Mapping[str, Manifest]:
+    import platypush
+    from platypush.config import Config
+
+    conf_args = []
+    if conf_file:
+        conf_args.append(conf_file)
+
+    Config.init(*conf_args)
+    app_dir = os.path.dirname(inspect.getfile(platypush))
+    manifest_files = set()
+
+    for name in Config.get_backends().keys():
+        manifest_files.add(os.path.join(app_dir, 'backend', *name.split('.'), 'manifest.yaml'))
+
+    for name in Config.get_plugins().keys():
+        manifest_files.add(os.path.join(app_dir, 'plugins', *name.split('.'), 'manifest.yaml'))
+
+    return {
+        manifest_file: Manifest.from_file(manifest_file)
+        for manifest_file in manifest_files
+    }
+
+
+def get_dependencies_from_conf(conf_file: Optional[str] = None) -> Mapping[str, Iterable[str]]:
+    manifests = get_manifests_from_conf(conf_file)
+    deps = {
+        'pip': set(),
+        'packages': set(),
+        'exec': set(),
+    }
+
+    for manifest in manifests.values():
+        deps['pip'].update(manifest.install.get('pip', set()))
+        deps['exec'].update(manifest.install.get('exec', set()))
+        has_requires_packages = len([
+            section for section in manifest.install.keys()
+            if section in supported_package_managers
+        ]) > 0
+
+        if has_requires_packages:
+            pkg_manager = get_available_package_manager()
+            deps['packages'].update(manifest.install.get(pkg_manager, set()))
+
+    return deps
+
+
+def get_install_commands_from_conf(conf_file: Optional[str] = None) -> Mapping[str, str]:
+    deps = get_dependencies_from_conf(conf_file)
+    return {
+        'pip': f'pip install {" ".join(deps["pip"])}',
+        'exec': deps["exec"],
+        'packages': f'{supported_package_managers[_available_package_manager]} {" ".join(deps["packages"])}'
+        if deps['packages'] else None,
+    }
+
+
+def get_available_package_manager() -> str:
+    global _available_package_manager
+    if _available_package_manager:
+        return _available_package_manager
+
+    available_package_managers = [
+        pkg_manager for pkg_manager in supported_package_managers.keys()
+        if shutil.which(pkg_manager)
+    ]
+
+    assert available_package_managers, (
+        'Your OS does not provide any of the supported package managers. '
+        f'Supported package managers: {supported_package_managers.keys()}'
+    )
+
+    _available_package_manager = available_package_managers[0]
+    return _available_package_manager
diff --git a/requirements.txt b/requirements.txt
index c6996466..2fc1c8fb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,323 +1,22 @@
 ###
-# Platypush Python requirements
-#
-# Uncomment the lines associated to the optional dependencies that
-# you may want to install to use some particular plugins or backends
+# Platypush common requirements
 ###
 
-# YAML configuration support
 pyyaml
-
-# Responses and schemas
 marshmallow
-
-# Support for setting thread/process name
-# python-prctl
-
-# Apache Kafka backend support
-# kafka-python
-
-# Pushbullet backend support
-# git+https://github.com/rbrcsk/pushbullet.py
-
-# HTTP backend support
+python-prctl
 flask
 websockets
 redis
 python-dateutil
 tz
-#uwsgi
-
-# HTTP poll backend support
 frozendict
 requests
-
-# Database plugin support
 sqlalchemy
-
-# Support for multi-users and password authentication
 bcrypt
 cryptography
 pyjwt
-
-# Support for Zeroconf/Bonjour
 zeroconf
-
-# RSS feeds support
-# feedparser
-
-# PDF generation support
-# weasyprint
-
-# Philips Hue plugin support
-# phue
-
-# MPD/Mopidy music server support
-# python-mpd2
-
-# Google Assistant support
-# google-assistant-sdk[samples]
-# google-assistant-library
-
-# Google APIs general layer support
-# google-api-python-client
-# oauth2client
-
-# Google text-to-speech API support
-# google-cloud-texttospeech
-
-# Last.FM scrobbler plugin support
-# pylast
-
-# Flic buttons support
-# It doesn't come with a pip package nor a setup.py,
-# follow the instructions on github to get the flicd daemon
-# running, set up the buttons you want to use, and then
-# enable backend.button.flic in your configuration.
-# git+https://github.com/50ButtonsEach/fliclib-linux-hci
-
-# text2speech plugin: mplayer system package
-
-# Video support on RaspberryPi
-# omxplayer-wrapper
-
-# Custom hotword detection: Snowboy
-# snowboy
-
-# Support for the RaspberryPi camera module
-# picamera
-# Pillow
-
-# Support for torrents download
-# python-libtorrent
-
-# Support for smart cards detection
-# pyscard
-
-# Support for MCP3008 analog-to-digital converter plugin
-# adafruit-mcp3008
-
-# Support for real-time MIDI events
-# rtmidi
-
-# Support for inotify plugin
-# inotify
-
-# Support for MQTT
 paho-mqtt
-
-# iCal calendars support
-# icalendar
-
-# Serial port support
-# pyserial
-
-# Bluetooth devices support
-# pybluez
-# gattlib
-# git+https://github.com/BlackLight/PyOBEX
-
-# Support for TP-Link HS100 and similar smart switches/plugins
-# pyHS100
-
-# Support for joystick backend
-# inputs
-
-# Support for Kodi
-# kodi-json
-
-# Support for Plex
-# plexapi
-
-# Support for Chromecast
-# pychromecast
-
-# Support for sound devices, playback and recording
-# sounddevice
-# soundfile
-# numpy
-
-# Support for media subtitles
-# git+https://github.com/agonzalezro/python-opensubtitles
-# webvtt-py
-
-# Multiple plugins and backends require the websocket client
 websocket-client
-
-# mpv player plugin
-# python-mpv
-
-# Support for NFC tags
-# nfcpy >= 1.0
-# ndeflib
-
-# Support for enviropHAT
-# envirophat
-
-# Support for GPS integration
-# gps
-
-# Support for BME280 environment sensor
-# pimoroni-bme280
-
-# Support for LTR559 light/proximity sensor
-# ltr559
-
-# Support for VL53L1X laser ranger/distance sensor
-# smbus2
-# vl53l1x
-
-# Support for PWM3901 2-Dimensional Optical Flow Sensor
-# pwm3901
-
-# Support for MLX90640 thermal camera
-# Pillow
-
-# Support for machine learning CV plugin
-# cv2
-# numpy
-
-# Support for cronjobs
 croniter
-
-# Support for Dropbox
-# dropbox
-
-# Support for Alexa/Echo voice integrations
-# git+https://github.com:BlackLight/avs.git
-
-# Support for clipboard manipulation
-# pyperclip
-
-# Support for RST->HTML docstring conversion
-# docutils
-
-# Support for Node-RED integration
-# nodered
-
-# Support for Todoist integration
-# todoist-python
-
-# Support for Trello integration
-# py-trello
-
-# Support for Google Pub/Sub
-# google-cloud-pubsub
-
-# Support for keyboard/mouse plugin
-# pyuserinput
-
-# Support for Buienradar weather forecast
-# buienradar
-
-# Support for Telegram integration
-# python-telegram-bot
-
-# Support for Arduino integration
-# pyserial
-# pyfirmata2
-
-# Support for CUPS printers management
-# pycups
-
-# Support for Graphite integration
-# graphyte
-
-# Support for CPU and memory monitoring and info
-# py-cpuinfo
-# psutil
-
-# Support for nmap integration
-# python-nmap
-
-# Support for zigbee2mqtt
-# paho-mqtt
-
-# Support for Z-Wave
-# python-openzwave
-
-# Support for Mozilla DeepSpeech speech-to-text engine
-# deepspeech
-# numpy
-# sounddevice
-
-# Support for PicoVoice hotword engine
-# pvporcupine
-
-# Support for PicoVoice speech-to-text engine
-# pvcheetah
-
-# Support for OTP (One-Time Password) generation
-# pyotp
-
-# Support for Linode integration
-# linode_api4
-
-# Support for QR codes
-# numpy
-# qrcode
-# Pillow
-# pyzbar
-
-# Support for Tensorflow
-# numpy
-# pandas
-# tensorflow>=2.0
-# keras
-
-# Support for Samsung TizenOS-based smart TVs
-# samsungtvws
-
-# Support for SSH integration
-# paramiko
-
-# Support for clipboard integration
-# pyperclip
-
-# Support for Google Translate
-# google-cloud-translate
-
-# Support for luma.oled
-# git+https://github.com/rm-hull/luma.oled
-
-# Support for DBus integration
-# python-dbus
-
-# Support for Twilio
-# twilio
-
-# Support for Github
-# pytz
-
-# Support for DHT11/DHT22/AM2302 temperature/humidity sensors
-# git+https://github.com/adafruit/Adafruit_Python_DHT
-
-# Support for LCD display integration
-# RPi.GPIO
-# RPLCD
-
-# Support for IMAP mail integration
-# imapclient
-
-# Support for NextCloud integration
-# git+https://github.com/EnterpriseyIntranet/nextcloud-API.git
-
-# Support for GStreamer integration
-# gst-python
-
-# Generic support for cameras
-# Pillow
-
-# VLC integration
-# python-vlc
-
-# SmartThings integration
-# pysmartthings
-# aiohttp
-
-# Support for file.monitor backend
-#watchdog
-
-# Support for Adafruit PCA9685 PWM controller
-#adafruit-python-shell
-#adafruit-circuitpython-pca9685
diff --git a/setup.py b/setup.py
index d93a4e66..87dd8623 100755
--- a/setup.py
+++ b/setup.py
@@ -34,7 +34,7 @@ setup(
     description="Platypush service",
     license="MIT",
     python_requires='>= 3.6',
-    keywords="home-automation iot mqtt websockets redis dashboard notificaions",
+    keywords="home-automation automation iot mqtt websockets redis dashboard notifications",
     url="https://platypush.tech",
     packages=find_packages(),
     include_package_data=True,
@@ -67,6 +67,7 @@ setup(
         'cryptography',
         'pyjwt',
         'marshmallow',
+        'frozendict',
     ],
 
     extras_require={
@@ -75,11 +76,11 @@ setup(
         # Support for Kafka backend and plugin
         'kafka': ['kafka-python'],
         # Support for Pushbullet backend and plugin
-        'pushbullet': ['pushbullet.py @ https://github.com/BlackLight/pushbullet.py/tarball/master'],
+        'pushbullet': ['pushbullet.py @ https://github.com/rbrcsk/pushbullet.py/tarball/master'],
         # Support for HTTP backend
-        'http': ['flask', 'frozendict', 'bcrypt'],
+        'http': ['flask', 'bcrypt', 'python-magic'],
         # Support for uWSGI HTTP backend
-        'uwsgi': ['flask', 'frozendict', 'uwsgi', 'bcrypt'],
+        'uwsgi': ['flask', 'uwsgi', 'bcrypt', 'python-magic'],
         # Support for MQTT backends
         'mqtt': ['paho-mqtt'],
         # Support for RSS feeds parser
@@ -97,7 +98,7 @@ setup(
         # Support for YouTube
         'youtube': ['youtube-dl'],
         # Support for torrents download
-        'torrent': ['python-libtorrent'],
+        'torrent': ['python-libtorrent-bin'],
         # Generic support for cameras
         'camera': ['numpy', 'Pillow'],
         # Support for RaspberryPi camera
@@ -167,12 +168,12 @@ setup(
                       'pyobex @ https://github.com/BlackLight/PyOBEX/tarball/master'],
         # Support for TP-Link devices
         'tplink': ['pyHS100'],
-        # Support for PWM3901 2-Dimensional Optical Flow Sensor
-        'pwm3901': ['pwm3901'],
+        # Support for PMW3901 2-Dimensional Optical Flow Sensor
+        'pmw3901': ['pmw3901'],
         # Support for MLX90640 thermal camera
         'mlx90640': ['Pillow'],
         # Support for machine learning models and cameras over OpenCV
-        'cv': ['cv2', 'numpy', 'Pillow'],
+        'cv': ['opencv-python', 'numpy', 'Pillow'],
         # Support for the generation of HTML documentation from docstring
         'htmldoc': ['docutils'],
         # Support for Node-RED integration
@@ -240,9 +241,7 @@ setup(
         # Support for IMAP mail integration
         'imap': ['imapclient'],
         # Support for NextCloud integration
-        'nextcloud': ['nextcloud-API @ git+https://github.com/EnterpriseyIntranet/nextcloud-API.git'],
-        # Support for GStreamer integration
-        'gstreamer': ['gst-python'],
+        'nextcloud': ['nextcloud-api-wrapper'],
         # Support for VLC integration
         'vlc': ['python-vlc'],
         # Support for SmartThings integration