bbbhltz, 1 year ago

A regular user like myself finds it easier to answer this question with 3 options:

1. Centralized
2. Decentralised
3. P2P

Signal and Threema are centralized options. With Signal planning on rolling out usernames it will be an excellent choice, hopefully.

Matrix, XMPP, Session, DeltaChat and others are decentralized, and some allow for self-hosting.

Briar is P2P.