Vinyl Music Player - A fork of Phonograph Music Player that "makes all Pro features free, as they used to be".
BitTorrent - BitTorrent is a peer-to-peer program developed by Bram Cohen and BitTorrent, Inc.
RockPlayer - RockPlayer is a video player that supports nearly all formats.
Soulseek - Soulseek® is a unique ad-free, spyware free, and just plain free file sharing application.
VPlayer - VPlayer - a free music player for VKontakte.
Shareaza - Shareaza is the most luxurious and sophisticated file sharing system you'll find.