DC++ - DC++ developed by Jacek Sieka.
WinMX - WinMX is another freeware peer-to-peer file sharing program by Frontcode Technologies only run on Microsoft Windows platforms only.
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.
Gigatribe - Gigatribe is a p2p software with more than 1 Million users.
eDonkey2000 - eDonkey2000 (also known as ed2k) is a free peer-to-peer file sharing software introduced in 2006 by US company MetaMachine.