Write-through and Read-through Cacheing for ActiveRecord

State machine that allows dynamic transitions for business workflows

OpenID authentication module for Devise using Rack::OpenID

Implements the common view pattern by which a list of messages are shown at the top, often a combination of flash messages and ActiveRecord validation issues on one or more models.

It just makes sense to store mutable, site-wide, admin-level settings in the database. Right? A key-value table may be more flexible, but maybe we don't want to be flexible! If you truly want that flexibility: http://github.com/stephencelis/kvc

Simple admin interface for the Delayed::Job gem...

A user-centric voting extension for Rails 3 applications.

A Rails engine that allows any model to act as avatarable, permitting it to have a complete avatar manager

Execute any ActiveRecord Model method in the background

Programmatic and command-line access to iTunes Connect Reports

Use jQuery's autocomplete plugin with Rails 4.

Your summary here

Crudify is a dynamic resource controller for Rails 3. The idea is skinny controllers with powerful hooks for easy customization.

fake_arel will simulate rails 3 arel syntax for Rails 2.

Adds support in ActiveRecord for foreign_keys, complex indexes and other database-related stuff. Easily create foreign_keys, complex indexes and views.

Spree Mail extends Spree by adding a mailing list subscriber model, sign up forms and an admin to send messages.

Convert arrays to CSV (array of hashes, matrixes, ActiveRecord objects etc).

Better integration tests for apps that use Twilio

ActiveConfiguration is an engine that exposes a generic settings store to ActiveRecord models. Made for very configurable applications, it allows you to avoid implementing specific ways to store settings for each model that needs such configuration. If your application isn't very configurable, ActiveConfiguration is probably overkill.

Entity-attribute-value model (EAV) is a data model that is used in circumstances where the number of attributes (properties, parameters) that can be used to describe a thing (an "entity" or "object") is potentially very vast, but the number that will actually apply to a given entity is relatively modest.