Software.com The Windows Users Group Network, founded in 1988 and the largest independent online organization supporting the MS Windows platform. The site provides technical support for Windows and in the areas of Internet, email, shareware, hardware, games, software development and much more. Some great stuff here.
Software5.com A comprehensive software directory with over 44,400 listed sites in 2,000+ categories. Very useful resource site.
Software5.com Has thousands of freeware, shareware, and demo programs for Windows, Mac, Mobile devices, and Linux to download for free. Browse categories, recently added and most popular programs, useful links, etc.