No problem, the question comes often. It’s understandable if you have not kept en eye on the space for a while. A-Frame is built on standards (HTML and WebGL), it runs on any browser without extensions or plugins. But it’s not a standard on itself so it can evolve much quicker and make design decisions based on real world usage by the community. While A-Frame offers high level primitives like `box`, `sphere`, `light`... the emphasis is on extensibility through an entity-component architecture. We aknowledge that A-Frame cannot anticipate all needs for all projects so we wanted to make very easy to extend and reuse 3rd party pieces.
