I would like to have community: Chipmunk2D.

description: Chipmunk2D is a simple, lightweight, fast and portable 2D rigid body physics library written in C. It’s licensed under the unrestrictive, OSI approved MIT license. Hundreds of shipping games have chosen Chipmunk because of the high quality, speed, and accuracy of its 2D physics simulations.

icon: https://avatars.githubusercontent.com/u/153633?v=4
header:
site: https://chipmunk-physics.net
code: https://github.com/slembcke/Chipmunk2D