Unity-Animation-Hierarchy-Editor. C#
334wolfendoom. A simple HTML5 2.5D engine made for fun.
6cannon.js. A lightweight 3D physics engine written in JavaScript.
4SteamworksWrapper. A very simple and specialized (though expandable) Steamworks API -> Unity wrapper.
3fuck-you. (╯°□°)╯︵sǝssǝɔoɹd oʎ llɐ llıʞǝɓɐɹ
2MonoGame. One framework for creating powerful cross-platform games.
1