ANts P2P - ANts P2P realizes a third generation P2P net.
qBittorrent - Lightweight and open source torrent client that runs on all major platforms.
Calypso - Calypso is primarily a multi-user, multi-channel reservations system with a wide range of customer and technology driven features and functionalities.
Deluge - Deluge is a full-featured BitTorrent client for Linux, Unix and Windows.
I2P - The I2P network provides strong privacy protections for communication over the Internet.
BitTorrent - BitTorrent is a peer-to-peer program developed by Bram Cohen and BitTorrent, Inc.