SenseGraphics is the company behind H3DAPI.
With expertice in the field of multi-modal application development they do not only provide a dual license, open source and commercial develpoment platform. They also provide hardware such as commercial haptic devices from SensAble, ForceDimension and Novint, real 3D displays, Immersive Workbench solutions and... check out
www.SenseGraphics.com to learn more!