Deluge

Fast, easy, free Bittorrent client.

File transfer tool with peer-to-peer networking, letting you transfer any file with any size.

Free cross-platform bittorrent client with a feature rich Web UI for remote access.

Modern client-server application for the Soulseek file sharing network.

Web-based torrent client with instant audio/video streaming.

Simple, robust, BitTorrent tracker (client and server) implementation.