C3D is a geometric modeling kernel originally developed by ASCON Group, now by C3D Labs, using C++ and written in Visual Studio. The C3D kernel used in software products as the component responsible for geometric model construction and constructed model control. It can be licensed by other companies for use in their 3D computer graphics software products. The most widely known software in which geometric kernels, like C3D, are typically used are computer aided design (CAD), computer-aided manufacturing (CAM), and computer-aided engineering (CAE) systems.