Cpp GitHub Repositories (2026) · Open Source Tools

C++ wrappers for SIMD intrinsics and parallelized, optimized mathematical functions (SSE, AVX, AVX512, NEON, SVE, WebAssembly, VSX, RISC-V))

Vulkan ray tracing glTF 2.0 renderer — RTX path tracer with PBR materials, AI denoising (DLSS, OptiX), and scene editing. NVIDIA open-source sample.

Downloads spotify playlists and songs along with metadata through an easy to use GUI (Downloads from YouTube)

The Windows App SDK empowers all Windows desktop apps with modern Windows UI, APIs, and platform features, including back-compat support, shipped via NuGet.

A fast 2D and 3D game engine — TypeScript SDK, C++/WebAssembly core, visual editor. Ship one project to web, desktop, WeChat MiniGames, playable ads, and native Android / iOS.

A general-purpose lightweight C++ graph library

With Uno, finally take full control of your SQP/barrier solver for nonlinearly constrained optimization

WinUI: a modern UI framework with a rich set of controls and styles to build dynamic and high-performing Windows applications.

A cross-platform C++20 3D library with Python bindings and the high-level API of three.js.

Speech-to-text server framework with next-gen Kaldi

std::tuple like methods for user defined types without any macro or boilerplate code

Technical analysis library: indicators and candlestick patterns, batch and streaming, native in C, Rust, Java, C#... and more

Gears of War 2 native PC port: the Xbox 360 game statically recompiled to x64 (not an emulator). 1440p/4K, FSR, 4K texture packs, keyboard & mouse, Android in progress. Bring your own copy.

Geonkick is a free software synthesizer capable of generating a wide range of percussive sounds, including kicks, snares, claps, hi-hats, shakers, and also unique effect sounds.

jank is the native Clojure dialect with seamless C++ interop.

An Event-Driven, Asynchronous, Behavioral State Machine Library for ROS2 (Robotic Operating System) applications written in C++

Free, open-source 3D sculpting for Linux, macOS and Windows: dense meshes, remeshing, painting, built-in AI (image/text to 3D), Send to Unreal, game-ready LODs, Gaussian splats and OpenUSD.

Strong chess engine

Parsing Expression Grammar Template Library

AWS SDK for C++