Godot is a powerful cross-platform game engine
A simple and easy-to-use library to enjoy videogames programming
Enables Roblox developers to use professional software tools
Desktop/Android/HTML5/iOS Java game development framework
Real Time Strategy game engine supporting early Westwood classics
One framework for creating powerful cross-platform games
Open source HTML5 game framework that offers WebGL and Canvas
Fast and lightweight JavaScript game engine built on WebGL and glTF
Open Source MMORPG Framework
CTFs as you need them
You can make it - Open Source MMORPG Platform
lua dev plugin for unreal engine 4 or 5
ThinkPHP Framework
Open source library for N64 development
A game framework written with osu! in mind.
Open source library for creative expression on the web, desktop, etc.
Self-hosted CMS platform based on the Laravel PHP Framework
Gideros Release version
Arianne is an engine to develop multiplayer online games like Stendhal
Game engine supporting many 3D/2D formats and graphic effects
utility collection for 2D game development in Java; sound-player
INSTEAD - Simple Text Adventure Interpreter.
JavaScript framework to build game engines, games, emulators and apps
Orx: Data-Driven Game Engine
A Complete WebGPU Game Engine for Browser & Desktop Arcade Oriented