- cl-css - cl-css is a minimalist CSS generator for Common Lisp
- css-lite - css-lite is a library for generating CSS from an s-exp syntax
- LASS - Writing CSS files comes with a lot of repetition and is generally much too verbose
- simple-rgb - simple-rgb is a library for manipulating RGB and HSV color values
Cascading stylesheets (CSS) are one means of supplementing a 'web page' with style information.