Alfresco offers true Open Source Enterprise Content Management (ECM) – Document Management, Collaboration, Records Management, Knowledge Management, Web Content Management and Imaging.

Installation guides with snapshots, clear to follow

http://192.168.1.77:8880/books/Alfresco.pdf

PS: The Alfresco installer also support console, so we can install minimal system. and install the Alfresco. no X is needed.

Details: http://wiki.alfresco.com/wiki/Main_Page