BitTorrent
In April 2001, Cohen quit MojoNation and began work on BitTorrent. Cohen unveiled his novel ideas at the first CodeCon conference, which he and his roommate Len Sassaman created as a showcase event for novel technology projects after becoming disillusioned with the state of technology conferences. It remains an event for those seeking information about new directions in software, though BitTorrent continues to lay claim to the title of "most famous presentation".
Cohen wrote the first BitTorrent client implementation in Python, and many other programs have since implemented the protocol.
In the summer of 2002, Cohen collected free pornography to lure beta testers to use the program. BitTorrent gained its fame for its ability to quickly share large music and movie files online. Cohen himself has claimed he has never violated copyright law using his software. Regardless, he is outspoken in his belief that the current media business was doomed to being outmoded despite the RIAA and MPAA's legal or technical tactics, such as digital rights management. In May 2005, Cohen released a trackerless beta version of BitTorrent.
In late 2003, Cohen served a short career at Valve Software to work on Steam, their digital distribution system introduced for Half-Life 2.
By 2004, he had left Valve and formed BitTorrent, Inc. with his brother Ross Cohen and business partner Ashwin Navin. In 2012 he announced a beta-version of Bit Torrent Live for TV broadcasting through Internet.
Read more about this topic: Bram Cohen