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.

Solidus Engine for Openpay Mexican Payment Gateway

Spree extension for integration with GoPay payment gateway.

Implements RSB's PaymentProvider interface using Stripe Checkout Sessions for one-time and subscription payments, with webhook-driven entitlement lifecycle management.

Provides Paypal payment integration for spree

Enable spree store to allow payment via PAGA Gateway (an online payment solution for Africa).

Official Ruby SDK for Tinker Payments API

Adds payment method for mainpay.ru

This is the gem for unitpay payment api

Zooz payments mobile api

Additional Payment Gateways for Spree Commerce using Veritrans

A gem to deal with Wechat payment.

Mild toolset for changing payment schedule algorithms to lovely Ruby code.

Adds PayPal Express as a Payment Method to Spree store

A uniform and simple way to create recurring payments with supported providers.

Experimental library for working with GoogleCheckout. Currently in use for payment at http://peepcode.com.

A payments module for Rails

Use BigFish's payment methods in your ruby project.

A gem for e-payment systems API's and SCI's

Everypay payment gateway. See https://www.everypay.gr for details.