Parasolid
Parasolid is a type of geometric modeling kernel that allows users to create and edit models. These kernels can be licensed by other companies to use in their 3D computer graphics software products.
The capabilities of Parasolid include advanced surfacing, thickening and hollowing, blending and filleting and sheet modeling. It also provides wireframe and drafting, tessellation and model data inquiries. Parasolid files cannot communicate and migrate 2D data such as lines and arcs and therefore only work with 3D solids and surface data.