Apps

Comparisons

• https://berty.tech/faq
• https://en.wikipedia.org/wiki/Comparison_of_instant_messaging_protocols
• https://en.wikipedia.org/wiki/Comparison_of_cross-platform_instant_messaging_clients

Centralized

• Signal - Signal Protocol
  

Telegram - Custom crypto / off by default!

Federated

• IRC
  • irssi
  • Revolution IRC
• XMPP
  • Conversations
• Matrix
  • Element
• https://simplex.chat/
  
• Session - Mixnet with store&forward

Distributed

• Jami - DHT
• Cabal - DAT protocol based
• Briar - Tor
• https://tox.chat/ - DHT