H3D API is an open-source, cross-platform, scene-graph API. It uses OpenGL for graphics rendering and HAPI for haptics rendering. Go ahead and try it now! H3DAPI is an open source haptics software development platform that uses the open standards OpenGL and X3D with haptics in one unified scene-graph to handle both graphics and haptics. H3DAPI is cross-platform and haptic device independent. It en