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

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

CloudPayments ruby client

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

Provides an interface to AzeriCard online payment processing system

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.

GP webpay, easy to implement payment gateway

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

Radiant Shop is an attempt at a simple but complete store. It includes Products, Categories, Orders and Credit Card Payments

A ruby gem to connect your application with ProxyPay(https://www.proxypay.co.ao) API that allows your application to interact with the Angolan ATM system knows as Multicaixa for online payments by reference.

Gem for dealing with epay.bg payments.

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.

A soapy interface to ACH Direct's PaymentsGateway.com service.

Paiement CIC is a gem to ease credit card payment with the CIC / Crédit Mutuel banks system. It's a Ruby on Rails port of the connexion kits published by the bank.

Qiwi payments solution

Wrapper around the Paypal Adaptive Payments API

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

Adds payment method for robokassa.ru

Kill Bill payment plugin for Paypal Express Checkout.

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