Keep your backend and front-end specs in sync! The rails_edge_test gem provides a dsl and rake task that uses your Rails app to generate json and appropriate wrapper files for use in your front-end testing.

Session inter-operability for Rails 3.0 and 3.1+ apps

A bunch of frequently used HTML helpers for Rails apps.

Automatically add a `link` header directing clients to `preconnect` to your `asset_host` to HTML document responses in Rails.

This Rails plugin provides the rake task i18n:update to download the latest core translations to vendor/rails-locales. On application start, the plugin automatically prepends downloaded core translations to the I18n load_path. So the downloaded core translations are automatically used in your application, but you can still override the defaults in your own locale files.

Enhances Rails inheritable attributes to ensure that changes to super classes are passed on to the subclasses

jQuery File Upload by Sebastian Tschan integrated for Rails >= 3.1 Asset Pipeline

Helper for displaying a localised <select> of languages using the ISO 369 standard or your own custom data source.

This gem provides an extraction of the DeprecatedMapper from Rails 3.0. If you have a legacy application with an old style routes.rb file this allows you to get your application running quickly in Rails 3.1.

Simple menu generator for Ruby on Rails

Adds several additional operations useful for customizing your Rails middleware stack.

Uses the ruby Mongo driver to store sessions in a MongoDB collection

Easily monitor your rails application

This Rails plugin adds default_named_routes_options to your controllers and mailers, so you can specify default options for named routes like ActionMailer::Base.default_named_routes_options[:only_path] = false

Dead simple nested layouts for Rails

Adds `Header="no-cache"`

Parameter Validation and Type Coercion for Rails

A "Productized Rails Application" is a single generic application having a hierarchical structure wherein add-ons and tweaks for concurrent versions of the application are possible without affecting the core "generic" code base. You might use this, for example, if you want to maintain a common shopping cart code base that all of your clients use, while still providing flexibility for paid add-ons or site-specific needs.

Rails Remote Control allows you to attach to running Rails processes using DRb and change the log level without restarts. Also, view actions handled per process.

Add callbacks for render method