Somehow Personas 0.7 slipped under the radar a few days ago. Personas is an open-source genealogy program based on the GenTech Genealogical Data Model from the National Genealogical Society. Note: I believe this is more of a proof-of-concept at this point.
Version 0.7 is a complete rewrite from version 0.5. C# has been replaced with C++ as the programming language. Currently, the project is built using MS Visual Studio .NET 2003. The Standard C++ Library is used for container classes. Implementations have been created for all of the Gentech Data Model classes. Sample test code is included to exercise the interfaces.