Not even a link to a static project description page (as far as I could tell)
I couldn't find a single picture with a quick browse through. (I know this is superficial) but no screenshot/screencast/videos is bad marketing and doesn't get me as excited about a project
I personally recommend Eclipse Orion[2], it's not as stylish as Brackets but is fully functional and you can even import repositories from github.
[1] http://i.imgur.com/7Wa6p.png
[2] http://www.eclipse.org/orion/getstarted.php (choose "Download and Install Orion on your localhost")
I think Ace (part of Cloud9) looks nicer and as far as I could tell, did everything Orion does. It also will import Git repos. Did you find anything that Orion does particularly well or better than besides Git repos?
But yeah, if you appreciate beauty, certainly going with cloud9 is the obvious choice.
I don't mean to nitpick, I'm working on something similar to these (with some important differences) and I would like to pick the "best" core editor. Like I said, is there anything else that Orion does better? I don't care about appearance, they're basically all customizable to an extent that they can be made it look identical. And for the most part, they all seem to support the same features (obviously CodeMirror is missing things like Git repos because it's only the browser-side of things)
The design is also in its early stages, and changes quite often.
Ill see if we can get some current screenshots up, or even some of the design docs for what the team is aiming for. (there are also some posted below).
Update :
The team just added a page with some screenshots: https://github.com/adobe/brackets/wiki/Brackets-Screenshots
(full disclosure : i work for adobe)