Tucows
Download freeware, shareware, and demos. Maintains over 45,000 software titles that are tested, rated, reviewed and ready to download.
http://www.tucows.com/
SourceForge
Directory of open source software providing mailing lists, bug tracking and online forums.
http://sourceforge.net/
Tek Guide
IT directory features information on internet, artificial intelligence, computer science, consultants, operating systems, and more.
http://www.tekguide.net/
Virtual Library
Categories of sites dealing with computing.
http://vlib.org/Computing