I find free software at:
http://www.giveawayoftheday.com/ and I've gotten a few good pieces of software (like Aiseesoft PDF to Word converter and Amersoft DRM media converter, both of which are offered every few months)), though lately not much that interests me. They also offer reviews which can be helpful.
Majorgeeks.com also offers software (free, trial, share) but almost never any reviews.