Top CPP GitHub Repositories & Tools (2026)

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++.

Jellyfin plugin for local AI-powered subtitle generation using Whisper - all processing stays on your server

An AI coding workstation that fits in your pocket.

An industrial connectivity edge application translating from proprietary protocols to OPC UA leveraging the W3C Web of Things (WoT) thing descriptions.

Modern MVVM framework on the C++23 baseline — cross-platform, layered, coroutine-first. Reactive DAG (Property/Computed/Effect), Task<T>, and pluggable adapters (Continuo-powered HTTP).

DLSS 5 (Neural Rendering) em qualquer jogo, emulador ou video que apareca na tela - sem injetar nada no processo do jogo. Precisa de uma GeForce RTX.

High-performance C++20 + Python engine for dynamic and incremental graph analytics on evolving graphs — BFS, SSSP, connected components, triangles, k-core and PageRank.

Adaptive video frame extraction for SfM, Gaussian Splatting, and photogrammetry.

Data over sound for React Native. Two phones pass bytes through the air with no network, no pairing and no account - a Nitro module wrapping ggwave, with the audio layer it doesn't have.

The set-and-forget LLM engine for Pascal and Volta: PXQ codec + kernels, auto-tuned per card. Ready-to-run PXQ models in MODELS.md; benchmarks vs llama.cpp in the README.

OpenGL/WebGL for Node.js

Run large language models locally on Intel Macs with AMD GPUs - native macOS app with Metal acceleration

Local, private voice dictation for macOS

A native LLM client for iOS & Apple Watch. Run local GGUF models offline via llama.cpp, or connect to OpenAI/Claude/Gemini. Features local RAG, Model Context Protocol (MCP) tools, Siri Shortcuts, and cross-device sync. Built with Swift.

Native amateur-radio workstation for FlexRadio (FLEX-6000/8000/Aurora) — Linux, macOS, Windows · Qt6 + C++20

📄 Convert HTML/CSS to PDF or images instantly

A high performance Vulkan/DX12 game engine in C++ & C#

An alternative to Windows Hello/Howdy

Run x86 and x86-64 games on RISC‑V Linux