  (Line 00) The authors mentioned some other FOSS CAD tools available to create solid models using a programming language, such as FreeCAD, PythonOCC, CadQuery and BRL-CAD. Among these CAD tools, Among these CAD tools, we have found FreeCAD to be the most active, having around a major release each year,..etc. Could you please compare the interesting features of OpenSCAD and FreeCAD with FreeCAD, PythonOCC, CadQuery and BRL-CAD.  