FrostWire - Easy to use BitTorrent Client and YouTube Downloader in one, with built-in search and music library.
Bashupload - Upload files from command line to share between servers
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)
FilePizza - Open source application used to transfer file via WebRTC and WebTorrent.
Deluge - Deluge is a full-featured BitTorrent client for Linux, Unix and Windows.
BlackHole File Transfer - Blockchain-based file transfer. Designed for everyday use.