Peerflix - Streaming torrent client for Node.js
JSTorrent - Torrent client for Google Chrome and Chromebooks
Webtor - Download and play torrents with free cloud BitTorrent client
WebTorrent Desktop - Stream torrents
aria2 - aria2 is a lightweight multi-protocol & multi-source command-line download utility. It supports HTTP/HTTPS, FTP, SFTP, BitTorrent and Metalink.
Torrents Time - Download and watch torrents in your browser!