Comment Re:Sounds interesting (Score 1) 31
Definitely take a look at the Alfresco Community Edition, which is free but without support: http://wiki.alfresco.com/wiki/Download_and_Install_Alfresco
Just install it and try it out, it's an easy install and quick to learn, but full of the options used in enterprise document management systems that you can master when you need them. We use the Share interface to manage the documents in each of our projects.