I recommend http://www.softhowto.com - Nice site with categorized software answers.
There I found programs by the functions they have, by their purpose. So I don't know the name of some software product, but I know what it should do. All SoftHowTo's services (Guides, tutorials, articles, fixes, tips, manuals and How-To's...) are free and there isn't any banners. The site is regularly updated and its database grows up. Please, post here any other similar sites for PC help.

I just stopped by there to check it out, and what do I find...a self help site. Nothing for software at all or anything to do with PC's.