This engine allows users to inject requests into a queue to be processed. The queue handles bank account validations, credit payments, debit orders and collecting bank statements/notify me statements.

Payment Method for USA ePay SOAP Webservice

Adds payment method for robokassa.ru

Gem for dealing with epay.bg payments.

This is currently a dummy until a public beta is over

A simple gem to integrate Rails app with Webpay Interswitch, a nigerian payment gateway

Embed QuickPay's secure payments directly into your Ruby applications. Learn more at https://tech.quickpay.net

CloudPayments ruby client

Add support for Pagseguro checkout as a payment method.

Liqpay.com payment gateway integration for Spree E-Commerce.

iDEAL payment gateway for ActiveMerchant (see http://www.ideal.nl and http://www.activemerchant.org/)

A Jekyll plugin to add Web Monetization API payment pointers to your site

Adds Purchase Order as a Payment Method to Spree Commerce

Ruby client library for integrating with Affirm financing payments

This gem implements the REST API of the Sisow payment provider.

Kill Bill payment plugin for Paypal Express Checkout.

An engine for the Straight payment gateway software. Requires no state to be saved (that is, no storage or DB). Its responsibilities only include processing data coming from an actual gateway.

Integrates Mercado Pago with Spree

GP webpay, easy to implement payment gateway

Provides an interface to AzeriCard online payment processing system