Enables Roblox developers to use professional software tools
Godot is a powerful cross-platform game engine
A simple and easy-to-use library to enjoy videogames programming
Desktop/Android/HTML5/iOS Java game development framework
CTFs as you need them
Open source HTML5 game framework that offers WebGL and Canvas
One framework for creating powerful cross-platform games
Open Source MMORPG Framework
Gideros Release version
Open game and rendering engine packed into a JavaScript framework
Real Time Strategy game engine supporting early Westwood classics
Open source library for creative expression on the web, desktop, etc.
Fast and lightweight JavaScript game engine built on WebGL and glTF
Self-hosted CMS platform based on the Laravel PHP Framework
A game framework written with osu! in mind.
ThinkPHP Framework
You can make it - Open Source MMORPG Platform
lua dev plugin for unreal engine 4 or 5
Arianne is an engine to develop multiplayer online games like Stendhal
TX Library is a tiny graphics library for Win32 written in C++.
Vivid3D is a C++ IDE/3D engine, with python scripting.
A Complete WebGPU Game Engine for Browser & Desktop Arcade Oriented
Orx: Portable Game Engine
JavaScript framework to build game engines, games, emulators and apps
Game engine supporting many 3D/2D formats and graphic effects