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

The Swift Programming Language

The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)

Carbon Language's main repository: documents, design, implementation, and related tools. (NOTE: Carbon Language is experimental; see README)

qBittorrent BitTorrent client

A modern replacement for Redis and Memcached

Compatibility tool for Steam Play based on Wine and additional components

Self-hosted game stream host for Moonlight.

Simple, secure & standards compliant web server for the most demanding of applications

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

GameStream client for PCs (Windows, Mac, Linux, and Steam Link)

Enabling the Windows Subsystem for Linux to include support for Wayland and X server related scenarios

A library for building cross-platform native desktop applications with Node.js and CSS 🚀. React NodeGui : https://react.nodegui.org and Vue NodeGui: https://vue.nodegui.org

μWebSockets for Node.js back-ends 🤘

A multi core friendly rigid body physics and collision detection library. Written in C++. Suitable for games and VR applications. Used by Horizon Forbidden West.

Industry-standard navigation-mesh toolset for games

Defold is a completely free to use game engine for development of desktop, mobile and web games.

A feature-rich, easy-learning and highly optimized Lua scripting plugin for UE.

Dagor Engine and Tools source code from Gaijin Games KFT

Embeddable, in-memory, document-oriented database with a high-level Query builder interface.

Unreal Engine Plugin for Lua APIs implementation

Test reliable udp for situation of realtime pvp game by wireless.