Configurator for Ruby Applications with some validation and sugars.

Adds a test that validates all your Rails fixtures.

BagIt package generation and validation

Format and validation a URL in active record

Hval 🐳 is hash validation gem

Custom ActiveModel::Validations to Make Your Life Easier

The Atlas Engine is a rails engine that provides a GraphQL API for address validation.

Provides validation and proper formatting for ISBN13 numbers.

IBAN rails validator with iso-iban.

Gem Utilities for ISBN validation and Isbn Conversion

iTunes Receipt validation

iTunes Receipt validation library

jacaranda generates helper methods based on your model validations.

Json Schema Client is a Ruby client for JsonSchema with validation and hypermedia.

Validation of popular Polish codes, such as PESEL, NIP, REGON, post codes, car registration numbers, credit card numbers and anything really that can be helpful in advanced commercial application for Polish customers.

Plinko helps you create validators that collect all validation errors instead of breaking on the first failure.

µValidator is a zero dependency validation library, which mimics ActiveModel::Error behaviour

Adds parameter validation and error control to interactor

A method construction and validation toolkit.

Methodic : provide Hash table options arguments manager (specifications and validations