Bitmessage is a decentralized, encrypted, peer-to-peer, trustless communications protocol that can be used by one person to send encrypted messages to another person, or to multiple subscribers.
License: Open Source
Bitmessage is a decentralized messaging platform that emphasizes strong encryption and anonymity, but has a more complex setup and limited user base. Ricochet, on the other hand, uses onion routing for enhanced anonymity and is more user-friendly, but may experience higher latency and is limited to text messaging.