Simulate particle movement with this physics engine. Planck is a (small) physics engine that can be used by interactive applications (like games) to simulate rigid bodies and particles.

A physics engine is computer software that provides an approximate simulation of certain physical systems, such as rigid body dynamics, soft body dynamics, and fluid dynamics, of use in the domains of computer graphics, video games or film.

The license of this software is Free, you can free download and free use this graphing software.