Simple, powerful, and constraint-based validation

Keep your code DRY by inferring column validations from table properties! Automagically validate presence, length, numericality, inclusion and uniqueness of ActiveRecord backed columns.

Common Rails validations wrapped in a gem.

Validation for serialized model objects

This library helps validate attributes to specific types in the same way that ActiveModel valiations work. Able to chain additional modifiers to each validation.

validate-website is a web crawler for checking the markup validity with XML Schema / DTD and not found urls.

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

Global validator as well as ActiveModel validator

Sometimes, your objects are only data and no behaviour. These are value objects, and they are defined by their _contents_. These objects are immutable, so it is safe to let them propagate throughout the system. Being immutable, value objects cannot be modified; their contents are set once on ini...

Holds static assets for Vandal UI

Vandamme is aware of files content, and will be mostly used to parse changelog files and extract relevant content.

varint C extension

Simple ActionPack::Variant configuration for Rails 4.1

Some tools that make working with the Varnish HTTP cache easier, including things like doing mass purges of entire domains.

varnish-rb provides a bridge between Ruby and [Varnish 3](http://varnish-cache.org/)

Several card processors and gateways support offloading the storage of credit card information onto their service. This offloads PCI compliance to the gateway rather than keeping it with each retailer. This library abstracts the interface to many of them, making it trivial to work with any or a...

Tool to configure a VMware vCloud Edge Gateway. Uses vcloud-core.

Tool to launch and configure vCloud vApps