Godot is a powerful cross-platform game engine
Open source HTML5 game framework that offers WebGL and Canvas
Open game and rendering engine packed into a JavaScript framework
Real Time Strategy game engine supporting early Westwood classics
You can make it - Open Source MMORPG Platform
Fast and lightweight JavaScript game engine built on WebGL and glTF
Open Source MMORPG Framework
Self-hosted CMS platform based on the Laravel PHP Framework
ThinkPHP Framework
Open source library for creative expression on the web, desktop, etc.
Gideros Release version
Arianne is an engine to develop multiplayer online games like Stendhal
Amateur 3D Game Engine
Game engine supporting many 3D/2D formats and graphic effects
Old-school 2D game engine
Ze Text Adventure game Builder : Create as you play !
Vivid3D is a C++ IDE/3D engine, with python scripting.
JavaScript framework to build game engines, games, emulators and apps
PyCAPGE - Python Classic Adventure Point and Click Game Engine
A free 3D game engine to create games and realtimes scenes for Windows
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
FreeCS is a free-software reimplementation of Counter-Strike 1.5.
The imaginary eight-bit machine
A distributed graph deep learning framework.