qBittorrent - Lightweight and open source torrent client that runs on all major platforms.
rTorrent - rtorrent is a BitTorrent client for ncurses, using the libtorrent library.
Deluge - Deluge is a full-featured BitTorrent client for Linux, Unix and Windows.
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)
Nicotine+ - Nicotine+ is a graphical client for the Soulseek peer-to-peer network.
Free Download Manager - It is a powerful modern download accelerator and organizer for Windows and Mac.