O3Spaces - Sharepoint alternative
O3Spaces Workplace brings document management and document collaboration features to OpenOffice.org / StarOffice, including real-time version control, check-in/check-out and document security. O3Spaces Workplace is the integrated Basic Content Service for OpenOffice.org / Staroffice. You can download the community edition for Free which supports up to 10 users. http://community.o3spaces.com/ More details: http://opentechmind.blogspot.com/2008/11/o3spaces-sharepoint-alternative.html