Easy validation and processing of Paypal IPN payments

Adds new validations to AR

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.

Flexible and modular validations for ActiveRecord models

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

Object validation inspired by RSpec.

Simple DSL for datatype validation for basic data types.Inspired from GRPC DSL. Since ruby is dynamic language, datatype validator helps to reduce runtime errors by validating structure before processing

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

ActiveRecord model validation against stopforumspam.com (Rails 3)

IAP and IAB receipt validation module.

A rails plugin to set the digested value before validation and validate uniqueness.

W3C Validators is a Ruby wrapper for the World Wide Web Consortium's online validation services.

Defined hashlike objects, with validations. For simple schema definitions and checking they're followed

WIP!!! escher sign and validation for faraday http rest client

Framecurve parser, validation and interpolation