You can setup the check when a password can be reused by a user. It lets you configure the last 'n' password can not be used by user when they change it.

A library for creating simple finite state machines.

A client for accessing freely-available patent data

Some extra sensible validations

Preserve SEO of your site by redirecting old non-working paths to new active application paths

Pattern matching library for plain data structure

A ruby implementation of the Kismet client protocol.

Pattern generator

Generate your pattern files through this generator: Eq. rails g pattern MyCustomDecorator

Gem to help manage, test and run common string patterns.

Pavlov's RSS

Pawnee attempts to build a better server provisioning system

Interface for interacting with the paychex enterprise API

Ruby library for integrating with the PAYDUNYA Gateway

Ruby SDK for working with Paylike payment services.

Generate Swiss DTA payment files to extract payments from your existing application

PlaceHolder

Mild toolset for changing payment schedule algorithms to lovely Ruby code.

The client handles authentication and enables users to directly issue requests to the Paymium API

Payshares XDR Helper Library