In the past, I tried several web site content management solutions such as PHP-Nuke, Xoops, etc. I recently came across another one called Drupal:
Drupal.org is the official website of Drupal, an open source content management platform.
Equipped with a powerful blend of features, Drupal can support a variety of websites ranging from personal weblogs to large community-driven websites.
I don’t really have a need to try it right now, but I thought I’d pass the information along. You can check it out at http://drupal.com/