FrostWire - Easy to use BitTorrent Client and YouTube Downloader in one, with built-in search and music library.
Peerflix - Streaming torrent client for Node.js
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)
JSTorrent - Torrent client for Google Chrome and Chromebooks
aria2 - aria2 is a lightweight multi-protocol & multi-source command-line download utility. It supports HTTP/HTTPS, FTP, SFTP, BitTorrent and Metalink.
Exatorrent - Exatorrent is a platform where you can download torrent files for free easily.