craftworkgames 

Makes MonoGame more awesome. Tile based maps, Bitmap Fonts, Sprites and SpriteBatch extensions, Input Listeners, Texture Atlases, 2D Camera, Viewport Adapters.

MonoGame.Extended Content Pipeline importers and processors to make MonoGame more awesome.

Makes MonoGame more awesome. Tile based maps, Bitmap Fonts, Sprites and SpriteBatch extensions, Input Listeners, Texture Atlases, 2D Camera, Viewport Adapters.

An event based input system to MonoGame more awesome.

Cross-platform open source C# game-development framework - Windows target

Support for Tiled maps to make MonoGame more awesome. See http://www.mapeditor.org

Cross-platform open source C# game-development framework

Animations to make MonoGame more awesome.

A high performance particle system to make MonoGame more awesome.

A GUI system for MonoGame written from the ground up to make MonoGame more awesome.

An Entity Component System for MonoGame to make MonoGame more awesome.

Cross-platform open source C# game-development framework - Android target

A scene graph system to make MonoGame more awesome.

A port of the Nuclex GUI system (https://nuclexframework.codeplex.com/) to make MonoGame more awesome.

A tweening system to make MonoGame more awesome.

Farseer Physics compiled as a portable class library (PCL) for use with the PCL version of MonoGame.

Collisions to make MonoGame more awesome.