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

Cross-platform, graphics API agnostic, "Bring Your Own Engine/Framework" style rendering library.

Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.

Tiny cross-platform webview library for C/C++. Uses WebKit (GTK/Cocoa) and Edge WebView2 (Windows).

Reliable & unreliable messages over UDP. Robust message fragmentation & reassembly. P2P networking / NAT traversal. Encryption.

Fiber/coroutine support for v8 and node.

A small, portable and extensible C++ 3D coding framework

Get Windows 7 windows as DirectX textures

[ABANDONED] Geography for node.js, see README

FUSE interface to Cassandra

A quick n' dirty utility for Kinect to see your body in other VR games/apps