LimeWire is a fast, easy-to-use file sharing program that contains no spyware, adware or other bundled software. Compatible with all major platforms and running over the Gnutella network, LimeWire’s open source code, is freely available to the public and developed in part by a devoted programmer community.
LimeWire is the fastest, easiest, most advanced file sharing [...]

µTorrent is a small and incredibly popular BitTorrent client.
Micro-Sized Yet Feature Filled
Most of the features present in other BitTorrent clients are present in µTorrent, including bandwidth prioritization, scheduling, RSS auto-downloading and Mainline DHT (compatible with BitComet). Additionally, µTorrent supports the Protocol Encryption joint specification (compatible with Azureus 2.4.0.0 and above, BitComet 0.63 and above) and [...]

FrostWire, a Gnutella Peer-to-Peer client, is a collaborative effort from many Open Source and freelance developers located from all around the world.
Using the most recent version of FrostWire allows users to enjoy the best program functionality. Bugs reported in older versions have been fixed for the latest version. Any users with FrostWire 2.5 or earlier [...]

LimeWire is a fast, easy-to-use file sharing program that contains no spyware, adware or other bundled software. Compatible with all major platforms and running over the Gnutella network, LimeWire’s open source code, is freely available to the public and developed in part by a devoted programmer community.
LimeWire is the fastest, easiest, most advanced file sharing [...]

iMesh is a media and file sharing client with online social network features, available in 9 languages. iMesh operates the first “RIAA-approved” P2P service, allowing users residing in United States and Canada to download music content of choice for a monthly fee in the form of either a Premium subscription or a “ToGo” subscription. A [...]