Phaser is a free and fast 2D game framework for making HTML5 games
A web-based IDE for HTML5 game development. Powered by Phaser
Simple and light-weight 3D game engine
Easy to use Python library for creating 2D arcade games
Pymunk is a easy-to-use pythonic 2d physics library
Orx: Portable Game Engine
Ct.js is a desktop game engine that makes learning programming fun
CGL (C Game Library) is a multipurpose library
LÖVE is an awesome 2D game framework for Lua
2D GPU-accelerated framework for ActionScript developers
The HTML5 Creation Engine
This software is a particle effect editing tool
A re-implementation of Freelancer
Desktop/Android/HTML5/iOS Java game development framework
Gideros Release version
Create 3D web applications with HTML, bring a new depth to your DOM
Kotlin Multiplatform bindings to Skia
Framework to facilitate communication in the Unity game engine
Cross Platform GUI for D programming language
Godot game template and component-based framework
Dedicated Game Server Hosting and Scaling for Multiplayer Games
Skript is a Bukkit plugin which allows server admins
A guide for how to use your smartphone to code anywhere at anytime
Official binding of SFML for .Net languages
3D game engine/framework in C, with Luajit and Python bindings now