Bitmessage is a peer-to-peer communication protocol used to send encrypted messages to another single person or to multiple subscribers. It is decentralized and trustless, meaning that one needs not inherently trust any entities such as root certificate authorities. Bitmessage uses strong authentication, meaning that the sender of a message cannot be spoofed. It aims to hide meta-data, such as the ID of sender and receiver of messages from passive eavesdroppers like those warrantless wiretapping programs which are ongoing.
Bitmessage is a collaborative project. You are welcome to submit pull requests - although if you plan to put a non-trivial amount of work into coding new features, it is recommended that you first solicit feedback on the DevTalk pseudo-mailing-list ("subscribe"): http://bm6hsivrmdnxmw2f.onion/chan/DevTalk
Feel welcome to join chan "bitmessage", BM-2cWy7cvHoq3f1rYMerRJp8PT653jjSuEdY
which is on preview here: http://beamstat.com/chan/bitmessage
