Jahia, an open source web content management system with document management and portal features, released Version 6 of their open source software this past week. The software is released under GPL [1] for the first time. They have also added an AJAX interface. Press Release [2]
Links:
[1] http://www.gnu.org/licenses/gpl.html
[2] http://www.fiercecio.com/press-releases/jahia-launches-new-community-edition-v6-under-gpl-license