X3D provides a presentation layer (a scene graph) to display animated, interactive 3D models from multiple sources and domains into web applications. The presentation pipeline is supported by X3D4 to make native authoring and use of X3D models fully integrated with HTML5.
Web3D is a nonprofit organization that develops and maintains the X3D, VRML, and HAnim international standards. These are 3D graphics file formats and run-time specifications for the delivery and integration of interactive 3D data over networks. Web3D Consortium members work together to produce open, royalty-free and ISO-ratified capabilities for the Web.