Following the need we have to use open software technology to sustain our community growth, we have worked on building up a version of FreeCAD on Mac OS X to test the software and help FreeCAD community to improve it as to be able to design RuggedPOD with it. The FEM module was a great potential asset for us. It looks like that this build is one of the first to support Netgen a very good mesher (even better than most of the private tools ), and CalculiX support.
We will try to keep the build up to date so. Here it is ! Feel free to report us bugs. We will get in touch with FreeCAD community to see if this build could be published directly on FreeCAD website.