Hey Mark, if you can give me an overview of what they do, I'd be happy to add it. From what I can tell, Sass is a ruby gem that provides a DSL which compiles to CSS. Reminds of <a href="http://jashkenas.github.com/coffee-script/" rel="nofollow">Coffeescript</a> which does the same for JS. I wasn't quite sure what Compass did though.