Oddbean new post about | logout
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fiatdenier | 3 months ago (raw) | root | parent | reply | flag +1 
 Like what?
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Maria2000 | 3 months ago (raw) | root | parent | reply | flag 
 Session (no phone number or email required)
Signal
Matrix
Xmpp 
So far, my favs are xmpp and Session.  I'm sure there are others.