Capitole du Libre is probably the french main event about free software. Organized every year since 2009, the event gathers people from different backgrounds during 2 days in Toulouse. There are arround 100 talks on many themes, and there is a nice representation of digital creation trough 2D or 3D. This year David Revoy, Francois Grassard and other active french members of the community will do a talk.
Important note : the event is in french.