Harp is a zero-configuration static web server with built in preprocessing. It supports Jade, Markdown, EJS, LESS, Stylus, and CoffeeScript. Harp is great for rapidly building front-end web applications, documentation, and blogs.
Harp intelligently compiles assets as the browser needs them, so it’s insanely fast. All you have to do is Save and Refresh. You can keep your code clean and organized: reuse common elements with partials, and maintain a consistent site design with layouts. Whether you’re making a GitHub project page, or a mobile application using Apache Cordova/PhoneGap, you can easily compile your code to HTML, CSS & JavaScript and host it anywhere.