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
Signal is primarily a messaging app focused on privacy and ease of use, using end-to-end encryption and a user-friendly interface. In contrast, Bitmessage is a decentralized messaging protocol designed for anonymity and security, but it can be less accessible due to its reliance on peer-to-peer networks.