IPSITM SDK (Interactive Physics Simulation Interface) is a software library for rigid-body physics simulation with force-feedback developed by Haption in collaboration with CEA LIST. It is the only software technology available on the market today able to carry out a real-time simulation at near-kHz frame rate with very large, non-convex geometries. Thanks to its use of a voxel-based representation of physical objects, IPSI is very tolerant with respect to "dirty" geometry. IPSI can guarantee the non-interpenetration of objects, and set a strict value for the clearance between objects.

IPSI is used in the implementation of the following products by Haption:

IPSI is a physics engine and a comprehensive solution to stability problems, model complexity and precision issues in case of industrial applications.