Prawn::Icon provides various icon fonts including FontAwesome, PaymentFont and Foundation Icons for use with the Prawn PDF toolkit.

By extending Spree Drop Ship to enable supplier payments Spree works as a Marketplace.

Official Adyen API Library for Ruby. Simplifies integrating with the Adyen API,\ including Checkout, Marketpay, payments, recurring, and payouts. For support please reach out to \ support@adyen.com. If you would like to contribute please submit \ a comment or pull request at https://github.com/Adyen/adyen-ruby-api-library.

Uses the javascript API for seamless braintree payments

Stripe Payment Method for Solidus

Ruby API for Amazon Web Services Flexible Payment Service

This Spree extension allows admin to provide bank transfer payment method to its users.

Spree extension to manage recurring payments/subscriptions using Stripe Payment Gateway.

This library is meant to interface with PayPal's Adaptive Payment Gateway.

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 payments without fixed monthly costs or any punishing registration procedures.'

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

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

Additional Payment Gateways for Solidus

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

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.

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.

A rails plugin to add active_merchant patch for Taiwan payment