Screen Reader	Website	Free / Commercial
JAWS	http://www.freedomscientific.com/Downloads/JAWS	Commercial
Supernova	http://www.yourdolphin.co.uk/productdetail.asp?id=1	Commercial
Hal	http://www.yourdolphin.co.uk/productdetail.asp?id=5	Commercial
Non Visual Desktop Access (NVDA)	http://www.nvda-project.org/	Free
System Access To Go	http://www.satogo.com/	Free