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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
It was based on Telepathy <https://telepathy.freedesktop.org/>. None of the built-in backends for XMPP, SIP, Skype and cellular calls used libpurple. (A libpurple-based backend could be installed from the community app repo.)
https://github.com/EionRobb/purple-discord
Its about the same as any other Pidgin protocol (no audio AFAICT), with some support for some of the features of Discord like reactions. It gets updates for new features sometimes. The author has written a lot of different libpurple plugins and is quite busy though.
Note I've heard you can get banned from Discord for not using the official client.
I went to try the Pidgin Facebook plugin, and I couldn't login. There's no more app passwords as the plugin suggests, if you try to login without the 2 factor Facebook sends "Is This You?" notifications every time, but doesn't let you login if you say yes.
There's github issue[1] for it and no resolution, except a weird python script hack to do 2 factor which may or may not be reliable.
1. https://github.com/dequis/purple-facebook/issues/526
> It's really sad that we've lost the ability to connect to so many of the services we use with third party clients.
https://meetfranz.com/