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XMPP and Matrix (and arguably ActivityPub) are open specifications for IM, each with multiple interoperable implementations. (I'm counting mxhsd as a 2nd implem
by gregknicholson 8y ago
XMPP and Matrix (and arguably ActivityPub) are open specifications for IM, each with multiple interoperable implementations. (I'm counting mxhsd as a 2nd implementation of a Matrix server; I accept that it isn't mature yet.)