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Sup is a New Messaging App by the Creator of Pixelfed
(wedistribute.org)
A community dedicated to fediverse news and discussion.
Fediverse is a portmanteau of "federation" and "universe".
Getting started on Fediverse;
What's wrong with Signal?
Desktop app works fine tbh.
Phone numbers required for now. Usernames potentially on the horizon per sms removal update.
Server side code is open source and available at Signal Server Github.
Also available on iOS. Android has an apk download so you dont need Google Play.
Does XMPP allow e2ee group video calls?
Yes, but its early days and only few clients support it. You can try it with Dino.
I don't see the problem with that, it's a phone messenger first.
Sure, definitely use what works for you. I do like it as a phone messenger that happens to have a functional desktop client (Telegram and surprisingly, Whatsapp do have better desktop clients).
Signal is great, but the core developer is inherently against federation with his own product. It's just one giant centralized service.
Signal is too darn secure. Much better to have one dude who probably knows how to use a crypto library build the whole thing over again with a coat of ActivityPub on top