NOTE – Azureus is now called VUZE and the latest version can be downloaded here
A full-featured java BitTorrent client program.
Bit Torrent offers fast downloads and Azureus makes it really easy to use Bit Torrent ! Includes numerous invaluable features for both beginners and advanced users including multiple torrent downloads, queuing/priority systems (on torrents and files), start/stop seeding options, instant access to numerous pieces of information about your torrents and an embedded tracker.
Windows NT/2000/XP/Vista, downloads for Mac OSX and Linux are also available from this site.