Compile Less, Sass, Scss, Stylus, Jade, Coffeescript, Haml and Markdown with live browser refresh. Prepros is a web design & development tool that does all the heavy lifting needed to preprocess, optimize and test your sites and keeps your workflow supercharged.
Scout-App is a cross-platform desktop app that delivers the power of Sass to the hands of web designers. Scout-app helps make your CSS workflow a snap by delivering more control, optimization, and organization. No developer required.
Fire.app is a menu bar only app for dead easy HTML prototyping. It supports Sass/Compass, Haml, ERB, Markdown, CoffeeScript, and more. Fire.app is written in Java (JRuby), and works in Mac, Linux and PC.
Emmet LiveStyle is a plugin for live bi-directional (editor <-> browser) CSS editing of new generation. Currently, it works in Google Chrome, Safari and Sublime Text, more browsers and editors will be available later.
Write your LESS markup. Crunch it into a CSS file. Link the crunched CSS file in your HTML. CRUNCH allows you to organize your LESS/CSS styles into some well-organized libraries, and then just serve a single file to the browser.