WebVR allows virtual reality experiences to be built for web browsers using WebGL and the WebVR API. It combines immersive VR hardware like the Oculus Rift and HTC Vive with the openness and accessibility of the web. WebVR applications can either be full virtual worlds on their own or independent VR apps for tasks like shopping, videos, or configuration tools like Mobic Autoconstruction's VR app for configuring construction projects. Resources for developing WebVR include browsers with WebVR support, libraries like THREE.js, and demo applications to explore.