Open CASCADE Technology (OCCT) is a geometry C++ framework.
It includes a set of class libraries providing services for 3D surface and solid modeling, CAD data exchange, and visualization.
OCCT can be best applied in development of software dealing with 3D modeling (CAD), manufacturing / measuring (CAM) or numerical simulation (CAE).
You are permitted to use Open CASCADE Technology within commercial environments and you are obliged to acknowledge its use.
We encourage you to send your modifications of the original source code (if you have made any) to our development team (Open CASCADE S.A.S.) because when you do so you contribute to the evolution of the product and many other people can benefit from your modifications.