X3DOM is a framework for integrating and manipulating (X)3D scenes as HTML5 DOM elements that are rendered via WebGL. The system allows defining 3D scene description and runtime behavior declaratively, without any low-level JavaScript or GLSL coding.
Xi3D is an X3D renderer and browser for 3D Web content. It contains compliant parsers for VRML'97 types, a java scenegraph, XML bindings using SAX2, a content converter, full runtime and event model, DOM Level 2, vecmath