Hirtius is a web-based historical research assistant created by Les Ateliers du Héron. Its goal is to replace the historian's notebook and box of cards, while providing a collaborative work environment for a whole team of researchers, that can be thought of as a purpose-built CMS cross-bred with a digital pictures management system, a genealogy application and a Wiki.
MIM:InfiniX Manuale Intermediale della Modernita': Infinite Info in Xml PHP-XHTML-XML-XSL-CSS-AJAX-RDF. Design your CMS and store data in XML files and/or MySQL database. It's a multisite and multilanguage CMS. Flexible form with RDF on the database.
phpMyGenealogy is a web-based genealogy application. Using authentication, multiple users can edit data online, import, export, run reports, and more. The layout is clean and simple to use (based on the simplicity of PAF) and export to GEDCOM-XML.