Brackets probably has been in development longer and is more complete in a way. But the point is that although it goes a little bit in the right direction, it doesn't go far enough.

The code editor is a component that adds a button to the left hand side, which then opens up a window with CodeMirrors built in for editing the HTML/CSS/Browser side CoffeeScript/ Node.js on server side/external css/js files/package.json for the selected component. Then when you hit save it sends all of those files to the server, compiles CoffeeScript, runs npm if necessary. If there are errors it pops them up in a message box. If there are no errors it restarts the server and reloads the page. So it is an IDE.

Another similarity is the idea of keeping together different aspects of a component such as the HTML and CSS. I take it farther by including the other parts I mentioned above.

Blogging is just the most common type of application so I need to make sure it works for that for starters.