FastTrack (http://www.fasttrack.nu/) is a company that makes P2P systems, based in Netherlands and Sweden.
They developed the protocol - FastTrack P2P Stack - behind KaZaA, Morpheus (MusicCity; Morpheus uses Gnutella protocol now) and Grokster systems that is undoubtedly cooler than Gnutella and Napster (but, of course, IMHO not quite as cool as Freenet =).