Everything here is ment to be experimental. Happy to see feedback!
Home Assistant Addon repository containing
Eufy Home Assistant MQTT Bridge (matijse/eufy-ha-mqtt-bridge)
Forwards Eufy Security push notifications to Home Assistant via MQTT.
TooGoodToGo Home Assistant MQTT Bridge (maxwinterstein/toogoodtogo-ha-mqtt-bridge)
Integrate your TooGoodToGo favourites to Home Assistant via MQTT.
ioBroker (iobroker.net)
Run ioBroker as Add-on.
OctoPrint Reverse Proxy (octoprint.org)
Small proxy to add OctoPrint to the Home Assistant.
Go to the Supervisor Panel, select Add-on Store, click the three little dots on the upper right and select Repositories. Now fill the Add repository testbox with https://github.com/MaxWinterstein/homeassistant-addons/ and click Add.