BrowserWarrior is a Ruby on Rails engine that let you reject your non-modern browser user just one line code

Bulkrax is a batteries included importer for Samvera applications. It currently includes support for OAI-PMH (DC and Qualified DC) and CSV out of the box. It is also designed to be extensible, allowing you to easily add new importers in to your application or to include them with other gems. Bulkrax provides a full admin interface including creating, editing, scheduling and reviewing imports.

This gem is kreetitech's fork (http://github.com/kreetitech/cache_fu).

This gem is kreetitech's fork (http://github.com/kreetitech/cache_fu).

Caracal::Rails takes care of registering Microsoft Word output with Rails. Essentially, this involves registering the mime type, establishing a template handler for .docx formats, and establishing sane defaults for generating professional quality Word documents.

Carnival is an easy-to-use and extensible Rails Engine to speed the development of data management interfaces. When you use Carnival you can benefit from made features that are already done. If you need to change anything, you can write your own version of the method, using real Ruby code without worrying about the syntax of the engine.

A library for encrypting and decrypting uploaded files. Supports Ruby OpenSSL::Cipher and OpenSSL::PKCS5 Strategies.

A really simple shopping cart implementation for rails.

This gem provides developers with the ability to easily integrate chargebee's subscription management into their application backed by active record models.

Formtastic Plugin for ClientSideValidaitons

rake stats is great for looking at statistics on your code, displaying things like KLOCs (thousands of lines of code) and your code to test ratio.

Simple data preparation from AR/Mongoid to the jQuery DataTables plugin

Based on heroku dataclips feature, SQL -> Dataset

Worker process pooling for Delayed Job

Adds configurable password policy enforcement to devise.

Devise extension to prevent users from using a common password.

Simple Dismissible help text for your Rails projects

Disqus 2012 Ruby on Rails wrapper

Adds ActiveRecord-specific methods to Dry::Initializer

eav_hashes allows you to to leverage the power of the EAV database model in the way you would expect to use it: a hash. Unlike other gems which require you to create a special model and/or define which attributes you want to have EAV behavior on (both of which defeat the purpose), all you need to do with eav_hashes is add one line to your model and create a migration. All the heavy lifting is done for you.