PYTHA is the leading 3D CAD software for planning, presentation and production. PYTHA is a proprietary product of PYTHA Lab GmbH and consists of MODEL, the flexible 2D and 3D modeler, and of RadioLab, the rendering module for photorealistic visualization and animation. The modeler includes a general free form surface module and some generators for special applications. It serves for creating computer models and making technical drawings. A cutting list with user definable layout serves for making tender preparation and cutting lists. An integrated borehole generator immediately provides data for the CNC machine. PYTHA has interface modules to exchange data with the most important other CAD systems.