The prettiest of the CSS prettifiers. I find these things quite helpful when I’m inheriting someone else’s CSS and I want to get it into the format that I like the most without doing it by hand. Actually, I usually start doing it by hand and then go: Oh yeah! Computers!
This is the one I was using before, which is functionally great and I like the style in which it asks you what to do (e.g. After brace insert [new line?]).