Deluge is a fully-featured cross-platform BitTorrent client. It is Free Software, licensed under the GNU GPLv3+ and adheres to freedesktop standards enabling it to work across many desktop environments.
GTK-gnutella
gtk-gnutella ist ein Server/Client für das Gnutella-Peer-to-Peer-Netzwerk.
Tixati
Tixati is a New and Powerful P2P System