CSSEdit

As the Internet expands, having a distinct style for your site becomes increasingly important. CSSEdit is a cascading style sheet editor that actually makes designing your site a joy.

Powerful previewing capabilities allow you to see your site evolve without having to open a browser. Intuitive visual editors allow you to change all styling attributes easily. A powerful source environment with intelligent auto-complete will seduce anyone who codes his CSS by hand.

The superior organizing capabilities in CSSEdit will make managing your style sheets much easier. Use groups, filter styles and much, much more...

There is a lot more, but the best way to find out how good this is, is to try it out!