simple_navigation_renderers gem adds renderers for Bootstrap 2 and 3. With these renderers you will be able create any bootstrap navigation elements, such as: submenu, navbar-text, divider, header. As well as add icons to menu elements, such as: gliphicons, font-awesome icons, even custom icons. Also you have split option for main menu containing submenu.

String Tools

Syntactic sugar for ActiveSupport::LogSubscriber for easy instrumentation and logging from third-party libraries.

TimeTap helps you track the time you spend coding on each project while in TextMate.

Adds a helper and 7-column grid for creating calendar views

Rails bindings for Unpoly, the unobtrusive JavaScript framework

Simple ActionPack::Variant configuration for Rails 4.1

This scan every ActiveRecord model looking for relationships ('has_many', 'belongs_to', etc.) and adds foreign key constraints.

Serves the .gz files that are created by the asset precompiler

ActionMailer heavily-inspired gem to handle SMS/Text Messages

Log Rails application actions and filters when accepts a request

Adds WSDL/SOAP and XML-RPC web service support to Action Pack

Form validation for Rails with Dry-Validation

Add support to ActiveMerchant for the Sermepa payment gateway by Servired used by many banks in Spain

ActiveModel with support for booleans and datetimes in form helpers

A safe way to accept user parameters and query against your ActiveRecord Models

ActiveRecord instrumentation for Rails, Resque and Sidekiq

ORM agnostic full text search

A session store and a cache store backed by Aerospike for Rails.

selectable_attr_rails makes possible to use selectable_attr in rails application