GeneWeb

GeneWeb is a genealogy software with a web interface created by Daniel de Rauglaudre. It can be installed locally on a stand-alone machine and on any web server.

It comes with an efficient relationship and consanguinity calculator developed in collaboration with Didier Rémy, Research Director at INRIA.
GeneWeb is a free software distributed with a GNU General Public License and supported on Unix, Linux, Microsoft Windows and Mac OS X.