WADL validator for requests

A gem that verifies the integrity of a state history

Tripwire captures validation errors from your Ruby on Rails application to help you identify and fix user experience issues. The TripwireNotifier gem makes it easy to hook up your app to the Tripwire web service.

Your favourite validations with Ruby

An advance email validator. Checks format, MX record existence for email domain, and SMTP address validation.

HasPhoneNumber makes validations for US phone numbers in ActiveRecord models easy.

Validations for ruby objects

A simple gem to do validation

Brazilian zipcode validations for ActiveRecord, integrated with correios-cep gem.

ActiveRecord: Simple filtering for html as validation.

Easily add Judge client side validation to your Formtastic forms.

Built for Developers. Ideal for MVPs, product ideation and validation.

Provides an easy way to add model-based validations to excel files.

Language Independent Validation Rules. Implements 2.0 specification

A Guilded (http://github.com/midas/guilded/tree/master) component that will reflect ActiveRecord validations and use them to live validate forms.

This gem wraps the guards.js jQuery validation library as a Rails asset gem.

Make it easy to use handles (callsigns/monikers/usernames) in URLs, even if they might be blank. Provides sensible validations and a find_by_id_or_handle method.

Adds video URL validation and API integration for using Vimeo on ActiveRecord models

IbanValidation provides a simple ActiveModel::EachValidator for formally validating International Bank Account Numbers (IBAN). It is based on the IBANTools gem.

This gem is used for the email validation and basic string operation like left padding, right padding, center padding, to uppercase, to lower case and to capitalize