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Koala is a gui for Less, Sass, Compass and CoffeeScript. Koala can run in windows, mac, and linux.

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.

CodeKit automatically compiles Less, Sass, Stylus, CoffeeScript, Jade & Haml files. It effortlessly combines, minifies and error-checks Javascript. It supports Compass. It even optimizes jpeg & png images, auto-reloads your browser and lets you use the same files across many projects. And that's just the first paragraph.

Scout-App is a cross-platform desktop app that delivers the power of Sass to the hands of web designers.

Fire.app is a menu bar only app for dead easy HTML prototyping. It supports Sass/Compass, Haml, ERB, Markdown, CoffeeScript, and more.

Say goodbye to Alt-Tab. Live.js makes sure you're always looking at the latest version of the page you're working on, whether you're writing HTML, CSS or Javascript.

A web developer tool that applies JavaScript and CSS changes without having to reload the page.

Compass is a stylesheet authoring framework that makes your stylesheets and markup easier to build and maintain. With compass, you write your stylesheets in Sass instead of plain CSS.

The life-saver app for web developers !Easily check syntax, minify or process all your web assets (stylesheets, scripts and templates) as you edit them with your favorite text editor!

SCSS Compiler generates formatted css styles from scss code. Beautify or minify compiled css if necessary.

SimpLESS is your easy-to-use LESS CSS compiler.

Compile less source and get CSS styles using our LESS Compiler. Beautify or minify CSS if necessary.

Compile Sass code and get CSS styles using our SASS Compiler.

WinLess is a Windows GUI for LESS.js. WinLess is a must-have for the webdeveloper who uses Windows. It automatically compiles LESS files on change.