The ultimate email validator

Common Rails validations wrapped in a gem.

Validation for serialized model objects

Uses the power and familiarity of ActiveModel::Validations to validate hash structures. Designed for detecting and providing feedback on bad requests to your RESTful Web Service.

ActiveModel validations for domains (including TLDs), ip addresses and email addresses with fully localization support.

Validator for european countries VAT numbers for ActiveModel

It provides validation of URIs (URLs) to ActiveModel records and ActionControllers in Rails 3.

warc is a pure ruby implementation of Web ARChive file reader and writer

Core components used in all our web products.

Rails Console on the Browser, Rails 3 edition.

Manage and merge Documents using the WebMerge.me REST API

An Active-Resource replacement that supports camel-cased APIs and HTTP caching, and avoids race conditions when changing authentication information on the fly.

This gem provides a simple interface to the entire Wordnik API. Its methods are defined by the documentation that comes from the API itself, so it's guaranteed to be up to date.

A simple toolkit for working with XML.

XML-Object Mapper with many built-in XML formats supported

Yahoo!ショッピング プロフェッショナル出店ストア向けAPIを簡単に叩けるrubyラッパー

A Zoho Subscription API Client.

Collection of base classes for stuff like services, repositories, decorators, etc.

A simple Authentise API Wrapper using HTTParty

An easy-to-use, easy-to-extend CMS.