Fast and lightweight JavaScript game engine built on WebGL and glTF
A development environment focused on modding
Godot is a powerful cross-platform game engine
Desktop/Android/HTML5/iOS Java game development framework
A simple and easy-to-use library to enjoy videogames programming
One framework for creating powerful cross-platform games
The game engine for everyone
Real Time Strategy game engine supporting early Westwood classics
Open Source MMORPG Framework
Open source HTML5 game framework that offers WebGL and Canvas
Gideros Release version
Enables Roblox developers to use professional software tools
lua dev plugin for unreal engine 4 or 5
ThinkPHP Framework
The open-source Roblox & UEFN alternative
Self-hosted CMS platform based on the Laravel PHP Framework
CTFs as you need them
Game engine supporting many 3D/2D formats and graphic effects
Orx: Portable Game Engine
Arianne is an engine to develop multiplayer online games like Stendhal
INSTEAD - Simple Text Adventure Interpreter.
Molecular viewer and prototyping framework
Old-school 2D game engine
JavaScript framework to build game engines, games, emulators and apps