FrostWire - Easy to use BitTorrent Client and YouTube Downloader in one, with built-in search and music library.
aria2 - aria2 is a lightweight multi-protocol & multi-source command-line download utility. It supports HTTP/HTTPS, FTP, SFTP, BitTorrent and Metalink.
µTorrent - Looking for a torrent site to download movies, music and more? Choose from top torrent sites like The Pirate Bay, RARBG, 1337X, and dozens more. (October 2019)
Torrents Time - Download and watch torrents in your browser!
Torrentdrive - Quickly and anonymously download torrents to the cloud and stream movies, music and more.
Peerflix - Streaming torrent client for Node.js