oce

oce is a C++ 3D modeling library. It can be used to develop CAD/CAM softwares,
for instance FreeCad, IfcOpenShell or CadQuery.

oce stands for Opencascade Community Edition. This project aims at gathering
patches / changes / improvements from the OCC community. Official OCCT
documentation and sources are available at http://www.opencascade.org/, you
can also check their development portal at http://dev.opencascade.org.