Phaser is a free and fast 2D game framework for making HTML5 games
Pterodactyl® is a free, open-source game server management panel
Godot game template and component-based framework
A lightweight game server framework implemented with Actor Model
A lightweight online game framework
3D game engine/framework in C, with Luajit and Python bindings now
egui: an easy-to-use immediate mode GUI in Rust
Native Android app for Habitica
Phaser CE is a fun, free and fast 2D game framework
Drogon: A C++14/17/20 based HTTP web application framework
UI Automation Framework for Games and Apps
Powerful, fast and developer-friendly extension framework
Better Stack JavaScript client
An asynchronous event driven PHP socket framework
LÖVE is an awesome 2D game framework for Lua
A web-based IDE for HTML5 game development. Powered by Phaser
the java game and entertainment runtime
Arianne is an engine to develop multiplayer online games like Stendhal
JavaScript framework to build game engines, games, emulators and apps
Lightweight, facility, high performance golang based game server
Open-source full-stack web development framework built on top of React
A Rust framework for building Minecraft servers