Prepros

Compile Less, Sass, Scss, Stylus, Jade, Coffeescript, Haml and Markdown with live browser refresh.

Free Personal Mac OS X Windows Linux

CodeKit

CodeKit automatically compiles Less, Sass, Stylus, CoffeeScript, Jade & Haml files. It effortlessly combines, minifies and error-checks Javascript. It supports Compass.

Commercial Mac OS X

Live.js

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.

Free Open Source Web

LiveReload

A web developer tool that applies JavaScript and CSS changes without having to reload the page. LiveReload monitors changes in the file system. As soon as you save a file, it is preprocessed as needed, and the browser is refreshed.

Commercial Mac OS X Windows Chrome Firefox

Bourbon

Bourbon - A simple and lightweight mixin library for Sass / CSS.

Free Open Source Mac OS X Windows Linux Sass

Crunch!

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...

Freemium Mac OS X Windows Linux

Compass.app

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...

Commercial Mac OS X Windows Linux

SiteFlow

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! Styles processing: Whether you're working...

Commercial Mac OS X

Smaller

Smaller is a powerful HTML, PHP, CSS and JavaScript compressor on Mac OS X, definitely a must have for every Mac based web developers.

Commercial Mac OS X

Squeezer

Minify, Compile and Compress your Web sources & images. On Mac. With a single click.

Commercial Mac OS X

Minimus

Minimus is a GUI frontend for Yahoo’s YUI Compressor. Instead of using inconvenient and slow websites to compress your JavaScript and CSS, you can do it right on your...

Free Mac OS X

Delivery

A little, yet powerful code compressor. Delivery make your scripts and stylesheets lighter. So them load faster. Three different engines. By the JS side, Delivery...

Free Mac OS X

Javascript Packer

Javascript Packer allows you to quickly validate and compress javascript code. Developers will find that compressing a single or multiple javascript files can take...

Commercial