CMS Matrix is provided as a community service to everyone interested in looking for a means to manage web site content. Here you can discuss, rate, and compare the various systems available on the market today.
The site allows you to select from a list of over 100 catalogued CMS titles including
- Back-End CMS
contentXXL - ASP.NET CMS
Contribute
dbCanvas
Direct News
Drupal
e-publish
Easy Publisher
eZ publish
Freestyler
Geeklog
IceWEB CMS
Komodo CMS
liveSTORYBOARD CMS
Maestro CMS
Mambo Open Source
MetaDot
MMBase
Movable Type
Netdoc
Open CMS
Opus
Oracle Portals
Phase
PHP Nuke
phpSlash
phpWebSite
Plone
Polopoly
PostNuke
Rainbow
Red Hat CCM
Sharepoint Portal Server
SIBOX e-commerce CMS
SiteSage CMS
Tiki CMS/Groupware
Typo3
Web Content Manager
WebGUI
Websphere EIP
Xaraya
XHP - eXpandable Home Pag
Xoops
ZeusCMS
...and plenty more.
User ratings for each are maintained as well as reviews of each. Although the site is in it's infancy right now and may not be too inclusive or actually indicative of what any system is really capable of.