cssdesk, jsbin and such do a wonderful job of showing a live preview side by side with your code. I wonder if there is a way to just get the live preview.
Ideally, I would open my text editor or ide on one monitor, and a browser on another monitor, and while I adjust the code in my ide, and save my document, the browser would sense the change, and update the page.
Would this need to built as a browser extension, maybe it can be built in javascript and offered for free to any developer who would like to use it.
I feel like this would be a great feature for firebug or something.
There is LiveJS, which does exactly this: