Sprockets is a Rack-based asset packaging system that concatenates and serves JavaScript, CoffeeScript, CSS, Sass, and SCSS.

An elegant, structured (X)HTML/XML templating engine.

CoffeeScript adapter for the Rails asset pipeline.

MailCatcher runs a super simple SMTP server which catches any message sent to it to display in a web interface. Run mailcatcher, set your favourite app to deliver to smtp://127.0.0.1:1025 instead of your default SMTP server, then check out http://127.0.0.1:1080 to see the mail.

Poltergeist is a driver for Capybara that allows you to run your tests on a headless WebKit browser, provided by PhantomJS.

Markdown TaskList components

A fully featured and advanced HTML5 WYSIWYG editor written in CoffeeScript on top of the Rails 3.1 asset stack

A framework for pulling together an overview of data that is important to your team and displaying it easily on TVs around the office. You write a bit of ruby code to gather data from some services and let Smashing handle the rest - displaying that data in a wonderfully simple layout. Built for d...

Client Side Validations

Enables easy Google map + overlays creation.

The exceptionally handsome dashboard framework for Rails.

Konacha is a Rails engine that allows you to test your JavaScript with the mocha test framework and chai assertion library. It is similar to Jasmine and Evergreen, but does not attempt to be framework agnostic. By sticking with Rails, Konacha can take full advantage of features such as the asset...

Compile Haml CoffeeScript templates in the Rails asset pipeline.

Automatically generate beautiful front-end style guides with Sass and Markdown. See https://livingstyleguide.org for details.

Serve is a small Rack-based web server that makes it easy to serve ERB or HAML from any directory. Serve is an ideal tool for building HTML prototypes of Rails applications. Serve can also handle SASS, Textile, and Markdown if the appropriate gems are installed.

Firehose is a realtime web application toolkit for building realtime Ruby web applications.

Package your assets for Sinatra.

Web-based Redis browser that can work as standalone app or mounted Rails engine.

A static site generator. Provides dozens of templating languages (Haml, Sass, Slim, CoffeeScript, and more). Makes minification, compression, cache busting, Yaml data (and more) an easy part of your development cycle.

Ruby Eco is a bridge to the official JavaScript Eco compiler.