SimplytheBest Language Scripts
The simply the best collection of language scripts
The 4 best language scripts
Free Apache v2
A CSS pre-processor that extends the CSS language, adding features that allow variables, mixins, functions and many other techniques to make CSS that is more maintainable, themable and extendable. Less runs inside Node, in the browser and inside Rhino. There are also 3rd party tools that allow you to compile your files and watch for changes.