Accepting iDEAL, Bancontact, SOFORT Banking, Creditcard, SEPA Bank transfer, SEPA Direct debit, PayPal, KBC Payment Button, CBC Payment Button, Belfius Direct Net, paysafecard, PODIUM Cadeaukaart and ING Home’Pay online payme...

Authorize.Net SDK includes standard payments, recurring billing, and customer profiles

Additional Payment Gateways for Solidus

PAY.JP makes it way easier and less expensive to accept payments.

Accepts orders via http, returns payment info via http or streams updates via websockets, stores orders in a DB

To award loyalty points and add loyalty points payment method to spree

Amazon Payments - Login and Pay with Amazon Ruby SDK

A Ruby gem wrapper for the pin-payments (pinpayments.com) API

A rails plugin to add active_merchant patch for Taiwan payment

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

Launch a landing page on Heroku in less than 10 minutes with JohnHenry. This gem sets up bootstrap and provides Bootstrapped user management pages with Devise. JohnHenry also includes a payment form that works with Stripe and is ready to go immediately.

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

Easy online payments with eWAY and the eWAY Rapid Ruby gem.

This is a Ruby library for integrating with SagePay. SagePay is a payment gateway for accepting credit card payments through your web app.

A straight-forward REST API for Amazon's Flexible Payments Services.

Quickly build an online store with carts, orders, automatic email receipts and payment collection via Stripe, StripeConnect, PayPal and Moneris.

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.

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.

Drop Zone is a solution to the problem of restricted sales in censored markets. The proposal is for the design of a protocol and reference client that encodes the location and a brief description of a good onto The Blockchain. Those wishing to purchase the good can search for items within a user-...

Accept online payments, create a Platform, and pay out to your sub-entities, sellers and service providers.