Rails 4, much to everyone's annoyance, provides no option to generate both digest and non-digest assets. Installing this gem automatically creates both digest and non-digest assets which are useful for many reasons. See this issue for more details: https://github.com/rails/sprockets-rails/issues/49

Roadie tries to make sending HTML emails a little less painful in Rails 3 by inlining stylesheets and rewrite relative URLs for you.

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 pipeline and engines.

Speeds up the Rails 3 asset pipeline by only recompiling changed assets

A Sprockets transformer that converts ES6 code into vanilla ES5 with Babel JS.

Browserify + Rails = CommonJS Heaven

Compile Haml CoffeeScript templates in the Rails asset pipeline.

Multimedia story telling for the web.

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

Keep track of Sidekiq failed jobs

Git repository viewer with a rocking good web interface

Hyrax is a featureful Samvera front-end based on the latest and greatest Samvera software components.

Use of web components and polymer-project in Ruby on Rails projects

Write reactive UI component with Ruby's elegancy and compiled to run in Javascript.

An asset pipeline implementation for Sinatra based on Sprockets with support for SASS, CoffeeScript and ERB.

Sprockets support for Middleman

This is a simple efficient blog and portfolio

Asset path helpers for Sprockets 2.x & 3.x applications

GitHub-flavored-Markdown TaskList components

Gem for splitting up stylesheets that go beyond the IE limit of 4095 selectors, for Rails 3.1+ apps using the Asset Pipeline.