Deluge is a full-featured free opensource BitTorrent client for Linux, Mac OS X and Windows. It uses libtorrent in it’s backend and PyGTK for it’s user interface. Deluge was created with the intention of being lightweight and unobtrusive. Deluge features a rich plugin collection; in fact, most of Deluge’s functionality is available in the form of plugins. Deluge is not designed for any one specific desktop environment and will work just fine in GNOME, KDE, XFCE and others.