Godot is a powerful cross-platform game engine
Enables Roblox developers to use professional software tools
Real Time Strategy game engine supporting early Westwood classics
Open source HTML5 game framework that offers WebGL and Canvas
Desktop/Android/HTML5/iOS Java game development framework
Open Source MMORPG Framework
Fast and lightweight JavaScript game engine built on WebGL and glTF
A game framework written with osu! in mind.
One framework for creating powerful cross-platform games
A simple and easy-to-use library to enjoy videogames programming
You can make it - Open Source MMORPG Platform
Open source library for N64 development
Unity3D Client And C# Server Framework
lua dev plugin for unreal engine 4 or 5
Open source library for creative expression on the web, desktop, etc.
Gideros Release version
ThinkPHP Framework
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
All-In-One program that combines multiple Fortnite Dev Account tools.
Arianne is an engine to develop multiplayer online games like Stendhal
SDL based generic 2D game engine
Old-school 2D game engine