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

Robokassa is payment system, that provides a single simple interface for payment systems popular in Russia. If you have customers in Russia you can use the gem. The first thing about this gem, is that it was oribinally designed for spree commerce. So keep it in mind.

A library to interface with Fawry's payment gateway API (charge, refund, payment status, service callback).

acts_as_payment is a rails plugin that enables you to work with bills.

Enable spree store to allow payment via GTPay, a GTBank Payment Gateway for Nigeria

Integration with polish payment method: Przelewy24

Client for ReCharge Payments recurring payments API for Shopify

Instamojo Ruby library - Assists you to programmatically create, edit and delete offers on Instamojo. Also supports listing, updation and details of Payments, Payments Requests and Refunds.

Ruby client for Moneybookers Automated Payment Interface and Payment Gateway

Instamojo Ruby library - Assists you to programmatically create, edit and delete offers on Instamojo. Also supports listing, updation and details of Payments, Payments Requests and Refunds.

One-off and subscription payments for your Rails application

Kill Bill Plugin to test the payment plugin api.

Ruby gem for Moka payment system

Ruby gem for interacting with Armor Payments.

Ruby client for the protocol type API provided by GMO Payment Gateway.

A Gem for alipay,contains web payment and mobile payment

Kaznachey payments api

A simple wrapper around the IATS Payments SOAP service

This gem extends the activemerchant offsite_payments gem providing integration of PoliPay.

Nequi gem provides a convenient way to integrate with Nequi payments systems for processing payments and other related operations.