Top C++ GitHub Repositories (2026) · Open Source Projects

JSON for Modern C++

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

ArduPlane, ArduCopter, ArduRover, ArduSub source

Animated sprite editor & pixel art tool -- Fork of the last GPLv2 commit of Aseprite

The Serenity Operating System 🐞

Xbox Cloud Gaming app for PS5 Homebrew

PCSX2 - The Playstation 2 Emulator

RawLab iOS app and Sony-to-Fuji RAW/LUT processing tools

macOS Quick Look extension for Markdown files.

Optimized inference for the DGX Spark and spark clusters

The AI-Native Search Database. Best for agent storage, it unifies vector, text, structured, and semi-structured data into a single engine. This all-in-one database makes agents smarter, easier to run, and more stable.

A local inference engine for Apple silicon, built around the model.

The JavaScript / Wasm runtime that powers Cloudflare Workers

An open-source framework for Steam Client themes and plugins

Bitcoin Core integration/staging tree

Cross-platform, customizable ML solutions for live and streaming media.

A customisable music player

A framework for building native applications using React

LiteRT, successor to TensorFlow Lite. is Google's On-device framework for high-performance ML & GenAI deployment on edge platforms, via efficient conversion, runtime, and optimization

Eternal Sonata, recompiled for PC.