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

RenderDoc is a stand-alone graphics debugging tool.

scene-oriented, flexible 3D engine (C++, Python, C#, Java)

Helix Toolkit is a collection of 3D components for .NET.

The Forge Cross-Platform Rendering Framework PC Windows, Steamdeck (native), Ray Tracing, macOS / iOS, Android, XBOX, PS4, PS5, Switch, Quest 2

The DirectX Tool Kit (aka DirectXTK) is a collection of helper classes for writing DirectX 11.x code in C++

Play your favorite games in a borderless window; no more time consuming alt-tabs.

Improved version of the X-Ray Engine, the game engine used in the world-famous S.T.A.L.K.E.R. game series by GSC Game World. Join OpenXRay! ;)

DirectXTex texture processing library

The DirectX Tool Kit (aka DirectXTK12) is a collection of helper classes for writing DirectX 12 code in C++

A modern cross-platform low-level graphics library and rendering framework

DirectXMath is an all inline SIMD C++ linear algebra library for use in games and graphics apps

Tooll 3 is an open source software to create realtime motion graphics.

Modern C++14 library for the development of real-time graphical applications

Official DirectX headers available under an open source license

GDI, OpenGL and Direct3D 9 re-implementation of the DirectDraw API for classic 2D games for better compatibility with Windows ME, 2000, XP, Vista, 7, 8, 10, 11, Wine (Linux/macOS/Android) and Virtual Machines

UVAtlas isochart texture atlas

DirectXMesh geometry processing library

Low Level Graphics Library (LLGL) is a thin abstraction layer for the modern graphics APIs OpenGL, Direct3D, Vulkan, and Metal