Add support for Pagseguro checkout as a payment method.

This gem allows your Ruby (1.9.2+) or Rails (3.2+) app to quickly integrate with Culqi Payment processor. It handles Culqi's flavor of encryption, decryption and Culqi ticket creation.

Qiwi payments solution

Add support to ActiveMerchant for the Sermepa payment gateway by Servired used by many banks in Spain

Add Ogone payments functionality to your Rails application

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

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.

EPC QR code for SEPA payments in any format

Allows easy calculation of revenue sharing by app and in-app purchases. Munges the monthly CSV reports from Google Play or Amazon Android app stores. Does Amazon currency conversions and verifies against payment amounts.

Official Spree Commerce Stripe payment gateway extension

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

SystemPay is a gem to ease credit card payment with Natixis Paiements / CyberplusPaiement bank system. It's a Ruby on Rails port of the connexion kits published by the bank.

This is currently a dummy until a public beta is over

Gem for dealing with epay.bg payments.

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

Helping rubyist integration with cmb (China Merchants Bank) payment service (招商银行一网通支付) easier.

This gem was designed to help you to access the locaweb payment gateway.

WebPay is payment gateway service in Japan. See also https://webpay.jp/.

Simple rails engine to add payments to your web application using sermepa standard web tpv

Validation for Dutch bank account numbers, Citizen Service Numbers (BSN) and Payment reference