Scary Excellent – Sites that have Great Reputations but Scare Me
http://drupal.com/#1 drupal helps other open source projects build their communities
http://www.joomla.org/ content management system (CMS), which enables you to build Web sites and powerful online applications
http://www.zoho.com/ work.online
http://www.fogcreek.com/FogBugz/ bring your projects into focus
http://www.openoffice.org/ the free and open productivity suite
https://www.dropbox.com/ secure backup, sync, and sharing made easy
