My favorite is PixelFed. I’m an artist, so Instagram was important for me, but for a few years now it’s absolutely terrible (no reach at all with their special algorithms). PixelFed fixes all that, it replicates the feeling of IG as it was 8-10 years ago: chronological feed, tag-based, no extraneous features. I’m really enjoying it, as I can finally grow again my followship as an artist: https://pixelfed.org/

Love PixelFed, I just like chronological and tag based systems. This way every user gets an equal opportunity to be seen. Unlike what’s happening with recommendation systems, where only a few super stars are pushed by the algorithms. If anyone like traditional illustrations, here’s my profile: https://pixelfed.social/i/web/profile/495699973550816234

XMPP was better known as Jabber back in the day, and most of us used Pidgin to connect to it. I used it for about 10 years or so.