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

Open Source Computer Vision Library

JSON for Modern C++

Caffe: a fast open framework for deep learning.

Compatibility tool for Steam Play based on Wine and additional components

A modern, C++-native, test framework for unit-tests, TDD and BDD - using C++14, C++17 and later (C++11 support is in v2.x branch, and C++03 on the Catch1.x branch)

Filament is a real-time physically based rendering engine for Android, iOS, Windows, Linux, macOS, and WebGL2

Cocos2d-x is a suite of open-source, cross-platform, game-development tools utilized by millions of developers across the globe. Its core has evolved to serve as the foundation for Cocos Creator 1.…

Open source simulator for autonomous vehicles built on Unreal Engine / Unity, from Microsoft AI & Research

Seamless operability between C++11 and Python

Cross-platform, graphics API agnostic, "Bring Your Own Engine/Framework" style rendering library.

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

a small build system with a focus on speed

MSVC's implementation of the C++ Standard Library.

The public CGAL repository, see the README below

Cinder is a community-developed, free and open source library for professional-quality creative coding in C++.

One stop solution for all Vulkan samples

Game engine

The virtual Eurorack studio

C++ logging library. It is powerful, supports asynchronous low latency, extendable, light-weight, fast performing, thread and type safe and consists of many built-in features. It provides ability t…

NVIDIA PhysX SDK

The Atomic Game Engine is a multi-platform 2D and 3D engine with a consistent API in C++, C#, JavaScript, and TypeScript

3D Engine with Blender Integration

Mirror of Visualization Toolkit repository

A cross-platform Qt IDE

A modern open source rendering engine for animation and visual effects

Presentation Materials from CppCon 2015

A lightweight framework on top of the Qt scene graph and only few classes from Qt/Quick. It is usable from C++ and/or QML.

Insight Toolkit (ITK) -- Official Repository. ITK builds on a proven, spatially-oriented architecture for processing, segmentation, and registration of scientific images in two, three, or more dime…

A lightweight, easy-to-use, and efficient library for processing and rendering 3D data (C++ & Python)