I loved AppJet, and yes, I'd call it an inspiration for what we're doing.
A number of people are mentioning JavaScript. We don't have any plans yet, but we're paying attention to the feedback.
Amazing! I just want to add my vote for javascript support. I am already invested in javascript for client and server development that having a javascript scripting engine like this would be heaven. Again, great job!
For another alternative supporting javascript look at JGate.de. We have AppJet still running.
For an alternative supporting javascript look at deployd.com