AllPeers was a free software extension for the Mozilla Firefox browser introduced in 2006. On March 2, 2008, AllPeers announced the end of the service. The extension allowed building a social network and sharing files on a P2P basis. It used a darknet style of peer-to-peer communication; files and information shared between users are only accessible as long as the users have each other on their respective access lists - their 'trusted private network'. AllPeers beta version was launched on August 24, 2006. It worked on Windows, Linux and Mac, which, once downloaded, becomes a toolbar in Mozilla Firefox.