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

Library for managing a nano currency node, including making and receiving payments, using the nano RPC protocol

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

PayPal Express Checkout API Client for Instance, Recurring and Digital Goods Payment.

An API for using the Amazon Flexible Payment Service (FPS).

Qiwi payments solution

A Ruby wrapper of Tenpay(财付通) Payment API

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.

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

Provides an interface to AzeriCard online payment processing system

The gem abstracts away the low-level details of the API, providing a simple and intuitive interface for sending payment requests, checking payment status, and managing payment callbacks

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

Payments platform for marketplaces

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

A Ruby gem for communicating with the payment platform of Redsys

A gem to deal with Wechat payment.

Spreedly is a cloud service that allows you to store credit cards and run transactions against them, enabling you to accept payments on your website while avoiding all liability and PCI compliance requirements.

Add Ogone payments functionality to your Rails application

EcoCash is the easiest way to accept mobile payments online. See https://ecocash.co.zw for more details.

Add support for Pagseguro checkout as a payment method.