Category
page 13D scenegraph APIs
Ogre3d
Object-Oriented Graphics Rendering Engine (OGRE) is a scene-oriented, real-time, open-source, 3D rendering engine.
Irrlicht Engine
open source 3D graphics engine
Gamebryo
Gamebryo (; ; formerly NetImmerse until 2003) is a game engine developed by Gamebase Co., Ltd. and Gamebase USA, that incorporates a set of tools and plugins including run-time libraries, supporting video game developers for numerous cross-platform game titles in a variety of genres, and served as a basis for the Creation Engine.

OpenSceneGraph
OpenSceneGraph is an open-source 3D graphics application programming interface (library or framework), used by application developers in fields such as visual simulation, computer games, virtual reality, scientific visualization and modeling.
Three.js
Three.js is a cross-browser JavaScript library and application programming interface (API) used to create and display animated 3D computer graphics in a web browser using WebGL. The source code is hosted in a repository on GitHub.

jMonkeyEngine
jMonkeyEngine (abbreviated JME or jME) is an open-source and cross-platform game engine for developing 3D games written in Java. It can be used to write games for Windows, Linux, macOS, Raspberry Pi, Android, and iOS (currently in alpha testing). It uses Lightweight Java Game Library as its default renderer, and also supports another renderer based on Java OpenGL.

Verge3D
Verge3D is a real-time renderer and a toolkit used for creating interactive 3D experiences running on websites.
Open Inventor
3D graphics software
Java 3D
java 3D graphics API
A-Frame
open-source web framework for building virtual reality (VR) experiences
Blend4Web
Blend4Web is a free and open source framework for creating and displaying interactive 3D computer graphics in web browsers.
GLScene
GLScene is a free OpenGL-based library for Delphi, C++ and Free Pascal. It provides visual components and objects allowing description and rendering of 3D scenes.
Babylon.js
Babylon.js is a JavaScript library and 3D engine for displaying real time 3D graphics in a web browser via HTML5. The source code is available on GitHub and distributed under the Apache License 2.0.
PHIGS
PHIGS ('''Programmer's Hierarchical Interactive Graphics System''') is an application programming interface (API) standard for rendering 3D computer graphics, considered to be the 3D graphics standard for the 1980s through the early 1990s. Subsequently, a combination of features and power led to the rise of OpenGL, which became the most popular professional 3D API of the mid to late 1990s.
Croquet Project
former software project