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 primarily focused on secure and anonymous messaging, making it ideal for privacy-conscious users. In contrast, RetroShare offers a broader range of features, including file sharing and a more user-friendly interface, catering to those who want an all-in-one decentralized communication platform.