Allows any model to be categorized.

acts_as_category

LinkedIn Open Source type ahead tool's REST API as a ruby gem. Now with Reddis support.

Rails gem that provides comment functionality with one-level nesting of comment replies (based on acts_as_commentable)

Add embedded contact info to a mongoid model

This gem provides basic linking functionality of active record objects. In cases when hard-coded references are not needed, you may refer to other objects by adding them to context

acts_as_crazy makes your objects do crazy things at random moments

Handle currencies on your ActiveModel with ease

This "acts_as" extension provides the capabilities a application to allow to generate meaning ful urls for SEO perpose.

Adds methods to models and controllers to perform automatic filtering, sorting and multi-column-queries without having to worry about the implementation.

adds daterange to AR models

Ruby on Rails gem to provide simple and easy commenting system for any model.

Using acts as default you can set a default row in your activerecord collection, also for has_many relationships

This gem sets the digested value before validation and validates uniqueness of the digested value.

Easy way to define AR attributes that should be stored in lowercase

Gives models a field with daper decorator of the model itself

Editions for ActiveRecord models

A categorizing plugin for Rails Applications

Provides sophisticated yet easy to understand ranking system with minimum changes to the system

Extends Rails existing encryption methods and adds simple record encryption.