I'm not sure about a CAD program, but the world definitely needs another geometric modeling kernel. If you are writing free software you have two choices - Ope

I'm not sure about a CAD program, but the world definitely needs another geometric modeling kernel. If you are writing free software you have two choices - OpenCascade and CGAL. I looked at the source to see which this uses and ... it's rust. It uses neither. Probably why it doesn't have many features.