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

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

Protocol Buffers - Google's data interchange format

🔍 A Hex Editor for Reverse Engineers, Programmers and people who value their retinas when working at 3 AM.

JSON for Modern C++

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

GoogleTest - Google Testing and Mocking Framework

DuckDB is an analytical in-process SQL database management system

Animated sprite editor & pixel art tool (Windows, macOS, Linux)

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

The Serenity Operating System 🐞

Compatibility tool for Steam Play based on Wine and additional components

Powerful yet simple to use screenshot software 🖥️ 📸

Official source code of FreeCAD, a free and opensource multiplatform 3D parametric modeler.

Fast C++ logging library.

A modern formatting library

Command & Conquer: Remastered Collection

DOOM Open Source Release

UPX - the Ultimate Packer for eXecutables

Abseil Common Libraries (C++)

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

A Smart Ethernet Switch for Earth

Nix, the purely functional package manager

mold: A Modern Linker 🦠

Frame profiler

Wazuh - The Open Source Security Platform. Unified XDR and SIEM protection for endpoints and cloud workloads.

Compatibility tool for Steam Play based on Wine and additional components

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

The official Open-Asset-Importer-Library Repository. Loads 40+ 3D-file-formats into one unified and clean data structure.

Gaming meets modern C++ - a fast and reliable entity component system (ECS) and much more