here at OCCplatform-independence achieved through OPEN CASCADE “know-how” in 3D graphics and GPU programming.
I wonder if "available for free" means opensource?In order to help the users to benefit from OPEN CASCADE photorealistic rendering technology, an authoring tool is being developed by the OPEN CASCADE team. It is coming soon and will be available for free – watch for the announcements on our site!
What about your secret plan to import FreeCAD into Blender with Python3? Maybe this way FC can just steal eevee.
The importer is working already. I haven't looked yet at what is needed to create eevee materials, but yes, going through blender is something that will probably always work best