A CoffeeScript, Stylus, and Jade (HTML and JST) Guard that mirrors yoursource files (.coffee/.styl/.jade/.jst.jadet) in another location (public/www/etc...).

Build, minify, and deal with different platforms and environments for your HTML5 app. This is often used with PhoneGap but designed not to require it, and high_five can be used to deploy any kind of HTML/JS/CSS-based application that requires different deployment configurations.

#Ruby on #Rails CMS with #Crowdsourcing support changes: http://bit.ly/home-page-0-0-6

Rack middleware for compressing JS and CSS assets with YUI Compressor

HTML Mockup is a set of tools to create self-containing HTML mockups.

Hulk allows you to group JavaScript & CSS into compressed bundles.

An opinionated modern, responsive HTML email generator with integrated helpers, versioning, live previews, minification and testing.

A non-Rails fork of the Jammit asset-packager for use with any Ruby framework

Jammit is an industrial strength asset packaging library for Rails, providing both the CSS and JavaScript concatenation and compression that you'd expect, as well as YUI Compressor and Closure Compiler compatibility, ahead-of-time gzipping, built-in JavaScript template support, and optional Data-URI / MHTML image embedding.

Mount any LocomotiveCMS site, from a template on the filesystem, a zip file or even an online engine

Compiles widgets and creates scaffolds for Materia run by Learning Systems and Technologies which is part of the Center for Distributed Learning at the University of Central Florida.

Marlene generates bookmarklet files or bookmarklet-pages from existing local javascript files or from remote javascript files represented by a URL.

Converts markdown to styled html with code highlighting

The microservice precompiler uses a handful of technologies to compile Javascripts and Stylesheets and create HTML pages from templates into a distribution folder ready for deployment. The microservices used are CoffeeScript, SASS and Mustache, compiling and minifying (where possible) into Javascript, CSS and HTML, respectively.

Moonwalkair help you to start build your AIR app and make it walk in the right way. The gem let you start your development faster, creating the entire folder structure and many files that a AIR app depends

Tiny CMS

Continous integration solution compatible with travis.ci

Pubba is a library designed to help you manage the static components of your site.

LESS CSS preprocessing for Rack apps.

Rack::Pack is a piece of Rack Middleware that packages and optionally compresses assets such as javascripts and stylesheets into single files. In a development environment, assets will be packaged on each request if there have been changes to the source files. In a production environment, assets will only be packaged one time, and only if there have been changes.