LESS extends CSS with dynamic behavior such as varibles, mixins, operations and functions. As an extension to CSS, LESS is not only backwards compatible with CSS, but the extra features it adds use existing CSS syntax. This makes learning LESS a breeze, and if in doubt, lets you fall back to CSS.

Writing LESS is cool and lightning fast if you compare it to good old CSS and besides, it trains your thinking in solving functional problems. So far so good, but in the end the web needs a CSS file to show your website as it is. Either you embed a javascript file to live-transform your LESS-Code into CSS in your browser or you find out how to precompile your files into standard CSS.

The most powerful thing SimpLESS does: Save your *.less file and, BOOOM, SimpLESS generates a 100% valid standard CSS document out of it. No further steps, it’s that simple.

Requirements: LESS Framework
Demo: http://wearekiss.com/simpless
License: Creative Commons 3.0 License