I am always on the lookout for freeware and shareware for the blind and visually impaired. Here are some interesting sites to check out for a variety of programs:
Blindsoftware
Tichnut
Software for the Blind
Webbie
Hark the Sound (Check out the other freeware on this site!)
OATS (Great stuff for many disablilities)
UNC (University of North Carolina at Chapel Hill)