In-browser mini IDE and Programming Language

What I see:<p>-----------------------------------------------------------<p>Hello! To view this page you need Microsoft Silverlight 3 plug-in<p>-----------------------------------------------------------<p>Sorry, fail.

I'm not sure why the homepage is search-enginey and I'm not sure why so many of the examples give syntax errors, but this is a very cool thing, or rather it has the potential to be very cool. I love the idea of generating simple GUIs for web apps from code. I also love the idea of being able to develop and use programs from within the browser. I would like to see this broken free from Silverlight (there's no reason it can't all be Javascript on the front end) and cleaned up some, but ultimately this is really freaking cool.

Requires Silverlight 3, eh?<p>How does it compare to: <a href="http://research.sun.com/projects/lively/" rel="nofollow">http://research.sun.com/projects/lively/</a>

Looks like javascript...smells like javascript - only without the cool stuff that javascript does. I guess the in-browser thing is kind of neat?

Seaside (Smalltalk web framework) provides something similar to this, where you can access the Smalltalk browser (i.e. IDE &#38; Debugger) directly in the web browser. Whether or not you'd actually develop this way, is another question.<p>Unfortunately I cannot find a running example openly available on the web, probably because you could easily crash the server if you wanted to.

Someone once tried to explain to me why a browser-based IDE was a good idea, but he never managed to convince me. Could anyone here help me understand some reasons why we would want it, besides quick tests and demos?

Great, wonderful, um... what language is this?!

The text editor is a bit clunky. I use the home and end keys extensively while I program, so their lack of functionality really bothers me. The intelisense is cool, but when I press tab it does not complete the word.