Very cool in concept. It would be nice if it was really easy to package up and deliver apps done this way (without end users having to jump through weird hoops to allow it to run). They can be really tiny presumably since the web server does so little (i.e. it isn't running node or anything).

One thing that seems missing is the ability to fetch files from other domains (avoiding the cross origin issue). Can it somehow magically do this just using XMLHttpRequest?

Maybe something to be used with Node-Webkit for those who want a full blown UI powered by web technology.

Nice job Brent