Rails integration for Ripple payment notifications.

A toolkit for generating and working with bulk payment files in various banking formats.

A simple gem for creating customers and charges using pin-payments (pin.net.au) API

Easy validation and processing of Paypal IPN payments

Turn-key E-Commerce for Ruby web applications

PaymentExpress 2.0 integration library

Checkout V2 Payment Gateway for Solidus

Gem for integrating GP Webpay HTTP api and WS recurring payments with multiple merchants

Offsite payments using the Dutch Omnikassa service from Rabobank.

PayU.in payment gateway integration for Spree

Redsys is an Spanish payment gateway.

Adds Dwolla as a Payment Method to Spree

Official Ruby Client Library for WeBirr Payment Gateway APIs

Add iDEAL payment to spree