Changes behavior of Active Record present?

Store a few extra (non-searchable) attributes away in a bucket. This is probably a horrible idea, but try it anyway.

A simple and non-intrusive way to mark deprecated columns/attributes in your models. Any usage of these attributes will logged with a warning message and a trace of where the deprecated attribute was called. An exception can be optionally raised as well.

Provides functionality to store a hash digest of an attribute using Argon2

It is desired to mask certain attributes of certain models by modifying the database.

An action based auditor, which has internal as well as outgoing link tracking. Provides Analytics for User count in line-chart.

AuditTracker helps you centralize data tracking configuration to be used across different models

Authentication for Rails applications

Adds email_token and email_token_updated_at columns. Works like Authlogic's perishable_token, but doesn't reset on every request. Designed primarily for verifying users' email addresses.

Authlogic extension to support Facebook OAuth2 javascript sessions. Currently requires koala but is easily extended for other facebook api wrappers.

A powerful, modern authorization plugin for Ruby on Rails featuring a declarative DSL for centralized authorization roles. Based on Declarative Authorization.

Authorize implements a full-blown Role-based Access Control (RBAC) system for Ruby on Rails

Works with Facebook.

An opinionated almost-turnkey solution for managing authorization in Rails

Easily use jQuery UI's autocomplete widget with Rails applications.

Fill in your brazillian addresses automagically

Ruby framework for the general-purpose automatic processing

Avocado listens for JSON responses in the test environment and generates a YAML file describing them, which it sends to a configurable URL.

Better back URL for your Rails applications.

AwesomeExplain provides the same APM level of query analysis under your development and test Rails environments.