GMO-PG is No.1 Payment Gateway in Japan. See https://www.gmo-pg.com for details.

A utility gem with basic interswitch payment functionalities

jquery.payments gem wrapper

Kill Bill payment plugin for Litle & Co.

Kill Bill payment plugin for Cybersource.

Kill Bill payment plugin for Orbital.

Payment strategy for Alipay(https://alipay.com) base on Midpay Middleware.

Online payments for entrepreneurs that want maximum growth

ActiveMerchant plugin for Paypal Adaptive Payments

Integration with PayTrace Payment Gateway

PayXML is an easy use wrapper for the the PayGate PayXML payment gateway API.

A simple gem for the Payza payment network

Ruby library for PaynetEasy payment API.

A wrapper for PintPay's payment API and webhooks.

PaymentExpress 2.0 integration library

Ruby wrapper for PuntoPagos Payment API

This gem helps to integrate RBK Money payments into Ruby on Rails applications

Command line client for Ripple payment platform

Rails integration for Ripple payment notifications.

Ruby wrapper for communicating with SEB.lv i-bank payment API.