Apollon is a KDE-based client for the p2p-protocol giFT (OpenFT, FastTrack(Kazaa!),..) It is very userfriendly, intuitively, offers an inline Mediaplayer for previews of downloaded files.
giFT is a project designed to completely abstract low-level filesharing protocol communication while allowing seamless support for multiple networks. Currently available plugins include: OpenFT, Gnutella, and FastTrack (third party).
giFT-FastTrack is an Open Source implementation of the FastTrack P2P protocol used by KaZaA, iMesh and Grokster.
giFTcurs is a curses frontend to the giFT daemon.
giFToxic is a GTK2 based GUI/client for the peer2peer net tool giFT.
giFTui is a graphical user interface to giFT using GTK+2. giFTui was designed to be easily usable, somehow using the same logic as other well-known peer-2-peer clients.