Luanti (formerly Minetest) is an open source voxel game-creation platform with easy modding and game creation

Apache Weex (Incubating)

Watches files and records, or triggers actions, when they change.

World's largest Contributor driven code dataset | Used in Quark Search Engine, @OpenGenus IQ, OpenGenus Visual Project

Open3D: A Modern Library for 3D Data Processing

Google's Operations Research tools:

Tiny cross-platform webview library for C/C++. Uses WebKit (GTK/Cocoa) and Edge WebView2 (Windows).

Drogon: A C++14/17/20 based HTTP web application framework running on Linux/macOS/Unix/Windows

🥑 ArangoDB is a native multi-model database with flexible data models for documents, graphs, and key-values. Build high performance applications using a convenient SQL-like query language or JavaScript extensions.

Approximate Nearest Neighbors in C++/Python optimized for memory usage and loading/saving to disk

QGIS is a free, open source, cross platform (lin/win/mac) geographical information system (GIS)

Open-source simulator for autonomous driving research.

A PSP emulator for Android, Windows, Mac, Linux and iOS, written in C++. Want to contribute? Join us on Discord at https://discord.gg/5NJB6dD or just send pull requests / issues.

C++ Parallel Computing and Asynchronous Networking Framework

Mobile Shell

A toolkit for making real world machine learning and data analysis applications in C++

Easily download and manage single-player game cheats for your convenience

A cross-platform, reimplementation of Notepad++

Speech-to-text, text-to-speech, speaker diarization, speech enhancement, source separation, and VAD using next-gen Kaldi with onnxruntime without Internet connection. Support embedded systems, Android, iOS, HarmonyOS, Raspberry Pi, RISC-V, RK NPU, Axera NPU, Ascend NPU, x86_64 servers, websocket server/client, support 12 programming languages

Convert HTML to PDF using Webkit (QtWebKit)

Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.

Amnezia VPN Client (Desktop+Mobile)

Multi-Joint dynamics with Contact. A general purpose physics simulator.

MuseScore is an open source and free music notation software. For support, contribution, bug reports, visit MuseScore.org. Fork and make pull requests!

cross-platform (Qt), open-source (GPLv3) video editor