Cpp GitHub Repositories (2026) · Open Source Tools

GPT-2 transformer for controllable, multitrack symbolic music generation

Sameko Dev C++: free C++ IDE, download at sameko.dev. GCC 16, clangd and GDB bundled, made for learning and competitive programming. (≧◡≦)

:zap: SpaRcle Engine - cross-platform 2D/3D game engine in C++.

AppCUI is a cross-platform TUI (Text User Interface / Terminal User Interface) / CUI (Console User Interface) framework designed to allow quick creation of both TUI Application and TUI Games. AppCUI is heavily based on C++20 standards and offers a multitude of widgets such as windows, buttons, checkboxes, radioboxes, comboboxes, listviews, treeviews, tab controls, image previewers, and many more.

OpenGL/WebGL for Node.js

Converters between Armadillo matrices (C++) and Numpy arrays using Pybind11

A few classes for extremely fast json parsing/serializing in modern C++. Possibly the fastest json parser in C++. Possibly the fastest json serializer in C++.

Ethereum-compatible, high-performance C++ Proof-of-Stake client with tools and libraries. It uses SKALE Consensus as its blockchain consensus core and includes a dynamic Oracle.

Local-first CPAP data viewer. Reads your machine's SD card (Sleep Bridge Lite, ez Share or FlashAir WiFi card, or a folder) or an AirSense 11 over Bluetooth, and shows every night in a web dashboard with live charts, events and PDF reports. ResMed, Löwenstein, Sefam, Luna. SQLite, PostgreSQL or MySQL. Home Assistant via MQTT or add-on.

Published: 2026-10-28

Algorithms and templates for competitive programming

A static analyzer for Java, C, C++, and Objective-C

geatsc: compiles TypeScript to C++ for GeaStack targets.

An easy to use modern C++ socket and network library for Linux.

A tiny (<900 KB) cross-platform Rust UI framework with C/C++/ASM bindings that compiles JSON layout diffs to native pixels, featuring MCP integration for AI agents and SSH UI forwarding.

Photon web browser

A small C++ finite element method implementation developed as a part of my master's thesis

Swift bindings for simdutf: SIMD-accelerated Unicode validation, conversion, and Base64 with configurable SwiftPM traits.

Unofficial native Windows port of Star Wars: Episode III - Revenge of the Sith (Xbox). Bring your own copy.

C++ implementation of Tink