A Rake task investigates the application's models definition, then tells you unique validations that do not have DB indexes.

URL validator with normalize URL from different charset

A bunch of useful modules to work with time/size constants/hashes

Includes functionality for site-specific registration and third-party authentication strategies such as social networks (Facebook, Twitter and Linkedin) and freemail providers (Yahoo, Windows Live and Gmail) with support for external database authentication.

Generates username suggestions for users

Simple pattern for keeping track of messages sent to users based on model events with different templates.

user_preference is a small library for setting and getting categorized user preferences. Supports both binary and multivalue preferences and default values.

Make utf8_enforcer to be applied only for non-standards-complying browsers.

Vagrant plugin for automagically managing guest DNS

This Vagrant plugin allows you to control centralizely remote virtual environments configured with vagrant-node.

Checks for valid hostname labels

Validation for serialized model objects

Log validation errors to the database for later inspection.

Easily track all the validation errors on your database so that you can analyse them.

Validation groups for ActiveRecord

To ensure Validations that continue to have issues are addressed by developers. This is done by logging the failure. When a specific failure continues to be an issue, a developer can look into the problem.

use VCR in development (or whatever Rails environment you want)

Stores Vines user data in an SQL database.

This engine aims to provide an easy way to work with dynamic permissions.

Wagons are plugins that extend your specific Rails application. This framework makes it easy to create and manage them.