https://aframe.io/docs/0.8.0/introduction/ A frame is a web framework for building the VR experiences A frame is based on the top of html A frame stil work on standard desktops and smartphones https://duckduckgo.com/?q=what+doesthreejs+in+A+frame&t=ffab&ia=qa threejs is a cross browser javascript library and API is usssed to create and display 3D computer graghics in a web browser https://en.wikipedia.org/wiki/Three.js