A small sinatra server that supports all the actions Mollie iDeal API needs to make a payment. Now you can test your transactions on you local machine without having to make portforwards

This gem serves as a Ruby wrapper for the NetRegistry Payment Gateway's API. Official documentation can be found at http://www.netregistry.com.au/ee-images/uploads/support/NR-ecom-gateway8.pdf. Source can be found on https://github.com/carnextnoor/net_registry

Performing multiple payments to PayPal using the MassPay API

Payment Gateway to Paybox's services

PayPal Client.

Simple SDK interface to create transactions for the Pay.nl payment service provider.