An Open Source Machine Learning Framework for Everyone

Godot Engine – Multi-platform 2D and 3D game engine

The new Windows Terminal and the original Windows console host, all in the same place!

Compatibility tool for Steam Play based on Wine and additional components

Share a single keyboard and mouse between multiple computers.

A framework for building Mobile cross-platform UI

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

Hazel Engine

Gaming meets modern C++ - a fast and reliable entity component system (ECS) and much more

openFrameworks is a community-developed cross platform toolkit for creative coding in C++.

Native cross-platform MongoDB management tool

Source for the TechEmpower Framework Benchmarks project

The Flutter engine

LÖVE is an awesome 2D game framework for Lua.

High-performance MySQL proxy with a GPL license.

The official distribution of olcPixelGameEngine, a tool used in javidx9's YouTube videos and projects

Motion, a software motion detector. Home page: https://motion-project.github.io/

Chromium-based cross-platform / cross-language application framework

MailCore 2 provide a simple and asynchronous API to work with e-mail protocols IMAP, POP and SMTP. The API has been redesigned from ground up.

C++11 implementation of Socket.IO client

Minimal golang binding to V8

App update framework for Windows, inspired by Sparkle for macOS

Easy to use C++17 HTTP Server with no compromise on performances. https://matt-42.github.io/lithium

RGB Driver for Linux and OS X

Oxygine is C++ engine and framework for 2D games on iOS, Android, Windows, Linux and Mac

a light-weight and asynchronous HTTP library (both server & client) in Qt5 and c++14

Go wrapper for the .NET Core Runtime.

Simple to use, fully customizable, high-resolution graphical user interface for openFrameworks

🎮 Pong clone for Linux written in C++ with SDL 2.0.