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That would be XMPP MUC (Multi User Conference). It has TLS encryption to the single server used by default. End to end encryption works in the form of OMEMO at
by upofadown 5y ago
That would be XMPP MUC (Multi User Conference). It has TLS encryption to the single server used by default. End to end encryption works in the form of OMEMO at least but I don't think it scales very well to lots and lots of connected users. I think PGP would also have the same sort of scaling problem. It has IRC like moderation and channel control stuff.There are a lot of light weight clients for it in the form of generic XMPP clients.
There is a project currently active to make some sort of replacement.