Form-Z (autodessys, Inc.) is a general purpose solid/surface 3D modeler. Its primary usage is modeling, but also has increasing capable rendering and animation features. formZ modeling tool set is one of the most advanced of any available 3D CAD applications. Many of its users are architects, but also include designers from many fields including interior designers, illustrators, product designers, and set designers. Its default renderer uses the LightWorks rendering engine for raytracing and radiosity. Yet, formZ supports Plugins and Scripts and has advanced rendering support via Next Limit's Maxwell Renderer. formZ has extensive Import/Export capabilities and it has been around since 1991 and it is available for both Mac OS X and Windows. Houdini (Side Effects Software) is a high-end package that is found often in studios. Its most common use is in animating special effects, rather than models.