Zope (Score 1)

Zope is about as full featured as you can get. I've been using it daily for a few months and haven't run into any real problems. The biggest plus is how easy it is to configure, use and maintain. Customization and extending its capabilities are fairly simple and easy with Python. There are already quite a few add ons for it, even one called Squishdot that mimics the way /. works that is very easy to setup and use. Check out Zope, you won't be disappointed...