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.
Fopnu - Fopnu is P2P File Sharing System. 100% Free, Simple and Easy to Use. Contains NO Spyware and NO Ads.
Ares Galaxy - Ares Galaxy is an open-sources, peer-to-peer (p2p) file sharing software that has its own powerful decentralized supernode network.
Soulseek - Soulseek® is a unique ad-free, spyware free, and just plain free file sharing application.
DC++ - DC++ developed by Jacek Sieka.