Top 20 NuGet box2d Packages

Box2D.NetStandard is the C# port of C++ Box2D. This package supports .NET Standard 2.1.
Box2D is a 2D physics engine for games
Redistributable components for the 'Box2D-cpp' package
Box2D is a 2D physics engine for games. This is a C++ statically-linked distribution.
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.
A C# port of Box2D
Box2d binding library for Bridge.NET projects.
Aether.Physics2D is a 2D collision detection system.
Farseer Physics XNA for WP7
Box2D is a 2D physics engine for games.
Aether.Physics2D is a 2D collision detection system.
Aether.Physics2D is a 2D collision detection system.
The Box2D window physics simulation.
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.
Box2DX physics engine. C# port of Box2D (original C++ project).