LayaAir is an open-source 2D/3D engine
JavaScript-based game engine designed to empower developers
Fast and lightweight JavaScript game engine built on WebGL and glTF
An easy to use 2D HTML5 game engine written in TypeScript
2D JavaScript Physics Engine
The game engine for everyone
A high-performance, industry-standard 2D physics engine built on Box2D
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
A fresh & lightweight javascript game engine
Cocos simplifies game creation and distribution with Cocos Creator
The Tiny JavaScript Game Engine That Can!
Ct.js is a desktop game engine that makes learning programming fun
A 2D rigid body physics engine for the web
Eva.js is a front-end game engine for creating interactive projects
Open source library for creative expression on the web, desktop, etc.
Full featured MUD server with all the trimmings.
Free, open source game engine online
Haskell game engine library for roguelike dungeon crawlers
State Management and Multiplayer Networking for Turn-Based Games
Javascript library for making tile based games
Cross-platform 3D scene editor based on three.js, golang and mongodb
3D C++ Game Engine - yet another open source game engine
2D Game Engine
Web powered cross-platform 3D, WebXR game engine