qBittorrent - Lightweight and open source torrent client that runs on all major platforms.
DC++ - DC++ developed by Jacek Sieka.
Deluge - Deluge is a full-featured BitTorrent client for Linux, Unix and Windows.
ApexDC++ - ApexDC.net is the home of an innovative P2P program using the Direct Connect and ADC networks.
BitTorrent - BitTorrent is a peer-to-peer program developed by Bram Cohen and BitTorrent, Inc.
AirDC++ - AirDC++ is an easy way to share files between users.