LASS
Writing CSS files comes with a lot of repetition and is generally much too verbose. With lispy syntax, shortcuts, and improvements, LASS aims to help you out in writing CSS quick and easy. LASS was largely inspired by SASS.

The project can be found on github including a fully documented symbol index and a getting started tutorial.
As of September 2014, LASS is on Quicklisp.

LASS is licensed under the Artistic License 2.0.

CSS web