A fast and lightweight GTK BitTorrent client.

Transmission has been built from the ground up to be a lightweight, yet
powerful BitTorrent client. Its simple, intuitive interface is designed
to integrate tightly with whatever computing environment you choose to
use. Transmission strikes a balance between providing useful functionality
without feature bloat. Furthermore, it is free for anyone to use or modify.

WWW: http://www.transmissionbt.com/