Understand more about WebXR and get started as a WebXR developer.
The game toolkits are designed for game developers and often include gaming-specific features such as physics models, input control systems, asset management, 3D sound playback, and the like.
General-purpose 3D frameworks
These frameworks are good for general-purpose programming as well as for game development when you want to do the logic yourself. They're designed for creating and animating 3D scenes regardless of context.
Standards. The Immersive Web Working Group help bring high-performance VR and AR to the open Web via APIs to interact with XR devices and sensors in browsers. They work together with the Immersive Web Community Group in building the immersive web platform. Most new ideas start there.