best-of ranking · updated nightly

Best Open Source Gaming Tools

Ranked by GitHub stars — actual adoption, not editorial taste. All 10 are free, open source and self-hostable; license and last activity on every entry.

1. 1
   Godot ★ 119K

   Free 2D and 3D game engine for cross-platform projects

   MIT C++ pushed 2026-10-30 details →
2. 2
   three.js ★ 117K

   JavaScript 3D Library.

   MIT JavaScript pushed 2026-11-01 details →
3. 3
   imgui ★ 77K

   Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies

   MIT C++ pushed 2026-10-30 details →
4. 4
   bevy ★ 49K

   A refreshingly simple data-driven game engine built in Rust

   Apache-2.0 Rust pushed 2026-10-30 details →
5. 5
   raylib ★ 36K

   A simple and easy-to-use library to enjoy videogames programming

   Zlib C pushed 2026-11-02 details →
6. 6
   GDevelop ★ 28K

   Create 2D and 3D games without coding, powered by AI assistance

   NOASSERTION JavaScript pushed 2026-11-01 details →
7. 7
   Babylon.js ★ 26K

   Babylon.js is a powerful, beautiful, simple, and open game and rendering engine packed into a friendly JavaScript framework.

   Apache-2.0 TypeScript pushed 2026-10-31 details →
8. 8
   libgdx ★ 26K

   Desktop/Android/HTML5/iOS Java game development framework

   Apache-2.0 Java pushed 2026-10-29 details →
9. 9
   OpenRA ★ 18K

   Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Li

   GPL-3.0 C# pushed 2026-10-28 details →
10. 10
    aframe ★ 18K

    :a: Web framework for building virtual reality experiences.

    MIT JavaScript pushed 2026-07-13 details →

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last updated nightly · ranking method: github stars, live-tracked

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