HAnim, glTF, and VRM—three major frameworks for representing and animating humanoid characters. 

The 3D web has evolved from experimental to a mature ecosystem powering cultural heritage, e‑commerce, scientific visualization, digital twins, and immersive storytelling. At the heart of this transformation are three foundational technologies: WebGL, glTF, and X3D. Each plays a distinct role—one is a rendering engine, one is a content format, and one is a full declarative standard for interactive 3D scenes. See comparison table below. 

There is great excitement around the development of new features and formats, from glTF 2.0 to X3D 4.0. This blog provides a high-level view of the leading open formats and how and why they should be used together.

See glTF + X3D integration on WebGL examples: