I don't know of anything like that. You could implement it a number of ways. You could conceivably do it with a browser plugin that did the interface to the n

I don't know of anything like that. You could implement it a number of ways. You could conceivably do it with a browser plugin that did the interface to the native content. Probably making a Wayland compositor that way would be easier than wrangling X11. I do plan to add more apps that run on the native side, they will be conscious of the HTML interface though. It's taking more of the Extremely smart client approach. So much so that there isn't a great need for a protocol beyond something for sending the client the JavaScript that runs any application specific protocol.