What are some alternatives?
When comparing Fire.app and Koala, you can also consider the following products
Prepros - Compile Less, Sass, Scss, Stylus, Jade, Coffeescript, Haml and Markdown with live browser refresh.
CodeKit - CodeKit allows you to optimize the performance of your website by automatically and efficiently compiling a variety of popular languages.
Scout-App - Process Sass files into CSS without any knowledge of the command line.
Live.js - Live. js. one script closer to designing in the browser. Say goodbye to Alt-Tab. Live.
Compass.app - Compass is a stylesheet authoring framework that makes your stylesheets and markup easier to build...
Squeezer - Minify, Compile and Compress your Web sources & images. On Mac. With a single click.