Nonsense about obsoleting CSS aside, I've downloaded this Javascript version and I've been using it as a standalone program with Node. The command-line tool is a lot less mature than the Ruby version, but it's so much faster. The Ruby one was really painfully slow. It was really frustrating to have to wait a whole five seconds for it to regenerate your CSS files every time you make a small little change. This one will regenerate your CSS in comfortably less than a second. It's much better.