I'll have to add a shameless plug to the visual HTML5 editor in the browser that I've built. Also created with GWT, and using GreenSock JS for animations.
As long as we're doing shameless plugs: checkout my cross-platform product at http://tweenui.com/animator – it's for creating simple HTML5 animations (focus is mobile display ads) in the browser. You can download the result or publish to the cloud.
Wow, that product page is just massive. It tires me so much just looking at it that I'd rather just browse along. I'd like to see what designers looking to build up their portfolio could do with the Amazon AWS products.
What happens is you have your systems set up so you don't need to tend to them if you don't want to/can't. What daily business does a single individual running an internet shop really have to tend to in the age of automation?