Roo Code (prev. Roo Cline) gives you a whole dev team of AI agents
A web-based IDE for HTML5 game development. Powered by Phaser
SonarSource Static Analyzer for Java Code Quality and Security
An easy to use 2D HTML5 game engine written in TypeScript
OpenSoldat is a unique 2D (side-view) multiplayer action game
Open QR Code is an open-source, cross-platform app
A game engine powered by python and panda3d
Pymunk is a easy-to-use pythonic 2d physics library
Desktop/Android/HTML5/iOS Java game development framework
Free, open source game engine online
Jazz² Resurrection: Open-source reimplementation of Jazz Jackrabbit 2
Gideros Release version
Ct.js is a desktop game engine that makes learning programming fun
Java/JavaFX/Kotlin Game Library (Engine)
Free game engine for development of desktop, mobile, and web games
Stride (formerly Xenko), a free and open-source cross-platform C# game
One framework for creating powerful cross-platform games
The Tiny JavaScript Game Engine That Can!
2D JavaScript Physics Engine
Multi-platform 2D and 3D game engine
A pure Go game engine
Plugin for IntelliJ IDEA that gives special support for Minecraft mods
Cross-platform game engine in Rust
A layer built on top of the Insight Toolkit (ITK)