Re:Ask HN: How do we know Signal or Telegram don't store our...
by ibraheemdev on Wednesday January 13, 2021 @09:32PM
(#25771095)
For anyone looking for the script: https://signal.org/blog/reproducible-android/
Still, years ahead anything else that actually have users. The server is mostly 100% closed source. There's one open source that you can host, but it's widely believed to not be even close to the one they use.
I think only matrix is fully open and p2p.