A simple gem to use in your controller to remove some of the work of comparing passwords and password confirmations.

Copyable makes it easy to copy ActiveRecord models.

Correole is a webservice that subscribes and unsubscribes readers from a newsletter.

Use this gem to define what is not nullable related to an ActiveRecord backed class

This makes it easier.

CounterOne provides improved counter cache for Rails app with support various relationships and conditions.

Gem for implementing multi country sites, enables countrizable extension for ActiveRecord model/data.

Easy and powerful popover system for Ruby On Rails.

Helper method to simplify Rails caching, based on PackRat

The goal of this gem is to provide token-based authentication for Rails (or Rails-like) web applications.

CPF validation for ActiveModel and Rails

CrAuditable is gem used to save history for same table

Tree and flattened array data structures for traversing an ActiveRecord model graph

crawl station system

This gem extends ActiveRecord::Base causing created_by_id and updated_by_id attributes to be set magically with about 30 LOC

Optimize ActiveRecord queries for filtering large tables on the created_at column by pre-computing id ranges.

Analyze and inspect CREATE TABLE SQL statements and translate across databases.

A credit card validation library to check offline validity of any AMEX, Discover, MasterCard, Visa cards using length and Luhn algorithm.

Creeper is an evented version of Stalker

CrewdPolicies enables conventional Pundit (https://github.com/elabs/pundit) policies to be written using an opinionated pattern based on declarative Create, Read, Execute (optional), Write and Destroy (CREWD) permissions for each resource. Conventional pundit create?, show?, update? and destroy? permissions are automatically derived from these, as well as permitted_attributes/strong parameters.