Open-source has entered one of the bastions of hardcore professional software, the 3D CAD market. Blender 3D is a free open-source program that does surfacing, animation, and post-production, meaning that it's competition for industrial-design tools like Maya and Rhino, not mechanical engineering tools like Pro-E or SolidWorks. It's available for Windows, Mac, and various flavors of UNIX. It has been called "the first and only fully integrated 3D graphics creation suite... with cross-platform compatibility" by Techimo.com.