C Plus Plus GitHub Repositories (2026) · Open Source Tools

Cross-Platform Level Editor

... the open-source glide computer

Decentralized cryptocurrency blockchain daemon implementing the XRP Ledger protocol in C++

:tangerine: Clementine Music Player

C++ Library for Audio Digital Signal Processing

ZQuest Classic is a game engine for creating games similar to the original NES Zelda

SuperTux source code

A modern C++ CSV parser and serializer that doesn't make you choose between ease of use or performance.

Widelands is a free, open source real-time strategy game with singleplayer campaigns and a multiplayer mode. The game was inspired by Settlers II™ (© Bluebyte) but has significantly more variety and depth to it.

Command the forces of The Project in a battle to rebuild the world after mankind has been nearly destroyed by nuclear missiles. A 100% free and open source real-time strategy game for Windows, macOS, Linux, BSD+

Modern C++ library for the development of real-time graphical applications

:zap: The Mobile Robot Programming Toolkit (MRPT)

Open Source Visual Servoing Platform

The C++ Standard Library for Parallelism and Concurrency

Header-only C++ binding for libzmq

RAJA Performance Portability Layer (C++)

A cross-platform file change monitor with multiple backends: Apple macOS File System Events, *BSD kqueue, Solaris/Illumos File Events Notification, Linux inotify and fanotify, Microsoft Windows and a stat()-based backend.

Stellarium is a free GPL software which renders realistic skies in real time with OpenGL. It is available for Linux/Unix, Windows, macOS and Haiku. With Stellarium, you really see what you can see with your eyes, binoculars or a small telescope.

C++ Agent toolkit - Pre-built binaries, visit: https://github.com/mtconnect/cppagent/releases Docker images available at https://hub.docker.com/repositories/mtconnect

Free/Libre Action Roleplaying Engine (engine only)