I’m am working on a project currently that is leveraging an Enterprise CMS. At the outset, I did an analysis of existing CMS systems to select the one that best fit our clients needs. That turned out to be Magnolia (www.magnolia-cms.com).
However, another one of our clients is using the Alfresco CMS for their business. I reviewed it over the weekend and was impressed by the slick and intuitive user interface. The creators of Alfresco come from Documentum and Interwoven.