Farseer Physics Engine is a collision detection system with realistic physics responses.
This version is for MonoGame Windows Store Apps. There are some minor changes to the code to make it compatible with WinRT.
This is a .NET Standard version of the Box2DX project, forked from https://github.com/colgreen/box2dx. Box2DX was originally created by Ihar Kalasouski and hosted at http://code.google.com/p/box2dx in order to provide a C# port of the popular physics engine Box2D by Erin Catto.