Azureus
Azureus is all at once one of the most robust and visually appealing BitTorrent clients, but also provides a remarkably simple wizard for creating a new .torrent file to seed on any public tracker.
Azureus is a java programmed BitTorrent client that will run on any system with a valid java runtime. This includes Linux, Macintosh, and Windows. It contains an obscene amount of features and can display and track an enormous number of statistics. This is a great program for advanced users but contains a simple enough setup wizard that even BitTorrent newbies should be able to get the hang of it pretty quickly.
Download it free from here: http://azureus.sourceforge.net/
UTorrent
µTorrent is a lightweight and efficient BitTorrent client for Windows with many features.
http://download.utorrent.com/1.8.1/utorrent.exe
BitTornado
BitTornado (which in previous versions was known as shad0wz experiemental client) is a fantastically simple program, and great for new BitTorrent users. It has several disadvantages to other, more robust clients in that it requires a separate window to be opened for each active torrent and cannot store statistics to a hard drive after being closed. If you have to reboot or close the software during a transfer, all share ratios and upload/download stats will be reset. Nonetheless, it is one of the simpler and more reliable clients out there.
http://www.bittornado.com/download.html
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