BitTorrent promotes the accessibility of data on the Internet by allowing anyone to share information with a large audience. For more information, take a look at the pretty images over at BitTorrent.com.
The current release is 1.5.1 which adds Leopard support. Tomato requires Mac OS X 10.4 or later.
Note: You're much better off using Transmission. I can't believe people still download this.
Note: The software is offered subject to accepting the terms of the BSD-style software license contained within. You also have to deal with the BitTorrent license, which is also inside.
The source code is available from sarwat.net | opensource site