It's currently work in progress but can already be downloaded at http://brackets.io/ for Mac and Windows.
The main features are: live results in google chrome* and it being fully open source and written in html, js and css.
*Google chrome is only supported at this moment which is the only major downside at the moment.
It also supports less files which are advanced css files which is how I found out about brackets after searching a editor that supported less files by default
Anyone has tried it already before?






