Cpp GitHub Repositories (2026) · Open Source Tools

MCAP is a modular, performant, and serialization-agnostic container file format, useful for pub/sub and robotics applications.

Programmable CUDA/C++ GPU Graph Analytics

A single file C++ header-only PEG (Parsing Expression Grammars) library

Cross-platform game engine with Vulkan backend

C++ 2D/3D graphics engine and scene editor for Vulkan 1.4, OpenGL and DirectX 11, on Windows and Linux. Physically based rendering, global illumination, ray-traced reflections and ambient occlusion, a path tracer for reference. A playground for real-time rendering techniques.

Build cross-platform native applications with the power of the Babylon.js JavaScript framework

⚔️ A cross-platform, open source, and super fast MUD client with scripting in Lua

C++ library for solving large sparse linear systems with algebraic multigrid method

WebRTC Native Client Momo (C++)

Nazara Engine is a cross-platform framework aimed at (but not limited to) real-time applications requiring audio, 2D and 3D real-time rendering, network and more.

CLion plugin for Bazel projects

Realtime Math

websocket and http client and server library, with TLS support and very few dependencies

GSmartControl - Hard disk drive and SSD health inspection tool

PokerTH is a poker game written in C++/Qt.

libOBS (OBS Studio) for Node.Js, Electron and similar tools

Modern C++ quantum computing library

Cross-platform Total Commander-like orthodox file manager for Windows, Mac and Linux

The fastest Direct2D-powered image viewer for Windows. Features multi-threaded JXL/AVIF decoding, GPU acceleration, and a borderless geek UI. Supports WebP, RAW, & QOI with visual settings and auto-updates. Portable & SIMD-optimized.

A library to extract Code Property Graphs from C/C++, Java, Go, Python, Ruby and every other language through LLVM-IR.