Louche provides common validators for ActiveModel/ActiveRecord classes

Validate numbers using Luhn Algorithm

Validates mac format with the mac_address gem.

A model based on ActiveModel that provides mass assignment with role support.

Rails 3 validators for magick numbers like PESEL, NIP, REGON

A suite of tools for inspecting, interfacing and working with MagLev. It consists of a number of Rack middlewares to record runtime information in the stone, an associated set of Sinatra middlewares for exposing said information through a JSON interface, and a number of Sinatra web-applications that take advantage of that interface to build a few simple browser-based development tools.

A mass mailing tool for real threads aficionados

MailShield enhances your app’s security by blocking temporary, spam and disposable email addresses, keeping your user data clean and reducing spam.

A mail gem based validator for rails

Mail validation for ActiveModel

DynamoDB Client Wrapper

Business logic for e-commerce checkouts

MarkMapper is a Object-Document Mapper for Ruby and Rails

Markun is Markdown bulk converter with menu link

This gem allows you to pass multiple roles into methods like save and update_attributes

Mass shootings as a service

Matic adds attribute accessors and dirty tracking to Mongomatic and optionally shortens field names saved to MongoDB.

Ruby boolean type casting

Send SMS messages

ActiveRecord-like interface for markdown files with YAML frontmatter