qBittorrent - Lightweight and open source torrent client that runs on all major platforms.
Torrentdrive - Quickly and anonymously download torrents to the cloud and stream movies, music and more.
Deluge - Deluge is a full-featured BitTorrent client for Linux, Unix and Windows.
Peerflix - Streaming torrent client for Node.js
BitTorrent - BitTorrent is a peer-to-peer program developed by Bram Cohen and BitTorrent, Inc.
JSTorrent - Torrent client for Google Chrome and Chromebooks