Godot Engine – Multi-platform 2D and 3D game engine

Compatibility tool for Steam Play based on Wine and additional components

Karabiner-Elements is a powerful tool for customizing keyboards on macOS

Vulkan-based implementation of D3D8, 9, 10 and 11 for Linux / Wine

World's largest Contributor driven code dataset | Used in Quark Search Engine, @OpenGenus IQ, OpenGenus Visual Project

Cap'n Proto serialization/RPC system - core tools and C++ library

OpenSceneGraph git repository

Community effort to maintain and improve Jedi Academy (SP & MP) + Jedi Outcast (SP only) released by Raven Software

Fetish-themed programming language

Cross-platform port of Arx Fatalis, a first-person role-playing game

OpenSceneGraph (OSG) Recipes

A d3d9 and d3d10 to d3d11 translation layer.