"Centralised messenger Signal has just announced that they are making part of their server software closed source. They claim it is to fight spam, but by using closed source they make it impossible for outsiders to verify the truth. This is worrying.
We really, really need a fully open, decentralised alternative to Signal.
There are several alternatives being developed, please support them:
➡️ @matrix
➡️ @delta
➡️ @briar
➡️ @Jami "
you forgot XMPP as an alternative. For example the snikket project is developing a XMPP ecosystem with clients for every platform.
Snikket was quite easy to set up and the community is very helpful