DC++ - DC++ developed by Jacek Sieka.
Acqlite - Acqlite is a Gnutella file-sharing platform based on Cabos, LimeWire and Acquisition.
eMule - eMule is a free peer-to-peer file sharing application for Microsoft Windows.
Kazaa - Kazaa is another peer-to-peer file sharing platform, use FastTrack protocol licensed by Joltid Ltd and operated as Kazaa by Sharman Network.
Vuze - Vuze is a free BitTorrent client used to transfer files via the BitTorrent protocol.
BitTorrent - BitTorrent is a peer-to-peer program developed by Bram Cohen and BitTorrent, Inc.