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

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

Windows Calculator: A simple yet powerful calculator that ships with Windows

Lovely console emulator package for Windows

DuckDB is an analytical in-process SQL database management system

KeePassXC is a cross-platform community-driven port of the Windows application “Keepass Password Safe”.

Karabiner-Elements is a powerful utility for keyboard customization on macOS Sierra (10.12) or later.

Google's common Java, C++ and JavaScript library for parsing, formatting, and validating international phone numbers.

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

An open source re-implementation of RollerCoaster Tycoon 2 🎢

Perceptual JPEG encoder

A Multithreaded Fork of Redis

Flexible level editor

Luanti (formerly Minetest) is an open source voxel game-creation platform with easy modding and game creation

Diablo devolved - magic behind the 1996 computer game

ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. It has a robust event-based programming language which provides protection from a rang…

Fast PlayStation 1 emulator for x86-64/AArch32/AArch64/RV64

An open source VR headset with SteamVR supports for $200

OpenTTD is an open source simulation game based upon Transport Tycoon Deluxe

LÖVE is an awesome 2D game framework for Lua.

A C/C++ implementation of a Sass compiler

A custom launcher for Minecraft that allows you to easily manage multiple installations of Minecraft at once

scene-oriented, flexible 3D engine (C++, Python, C#, Java)

Anonymous peer-to-peer instant messaging

An open source version of a game engine developed by Croteam for the classic Serious Sam games.

Descent 3 by Outrage Entertainment

Voxel module for Godot Engine

Dungeon Crawl: Stone Soup official repository

A high performance, editable terrain system for Godot 4.

Dagor Engine and Tools source code from Gaijin Games KFT