Wire - Simply the most Secure Messenger
wire.com
Always-on end-to-end encrypted instant messaging, voice- and videoconferencing with up to 100 participants - future proof with MLS integration

It's based on Signal protocol and it's also open source. However, unlike Signal it doesn't harvest phone numbers.

https://github.com/wireapp

  • ☆ Yσɠƚԋσʂ ☆@lemmy.ml
    ·
    3 months ago

    Looks like both the client and server are open source now, so it's definitely possible to self host. Unlike Signal, Wire also supports federation nowadays https://docs.wire.com/understand/federation/index.html