WebStorm 6.0 has FileWatcher templates for the following compilers:
YUI Compressor CSS
YUI Compressor JS
Other noteworthy features include:
Live Edit, which was introduced in the previous release, has been improved and now supports HTML5.
Improved HTML and CSS coding, with a re-designed HTML structure view and support for even faster coding using Emmet in the editor.
There is a fresh IDE look and feel, and Darcula (good joke!), a new native dark UI theme for the IDE and the editor. Of course if you are not a fan of the current fad for dark looking IDEs you can stick with bright up-beat white!
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WebStorm 6.0 is a free update for those who purchased a license after March 6, 2012 and there is a 30-day trial for new users in Windows, Mac OS X and Linux versions