rocketgate-ruby is a simple interface for communicating with RocketGate's Payment Gateway

Merchant signature calculator for Adyen (https://www.adyen.com) payments service. It is implementation of HPP HMAC (SHA-256) algorithm from Adyen documentation (https://docs.adyen.com/display/TD/HPP+HMAC+calculation).

SlidePay makes it ridiculously easy to take swiped payments anywhere, on any device. Check out http://www.slidepay.com for more info.

Views to see Order, Payment and Shipment Papertrail versions

Adds the ability to view payment logs in the admin

simple gem for payanyway payment gateway

Cash on delivery payment method for Spree

Defines ruby classes for the Splash Payments API

Alpha Card Payment Gateway for Spree

Add support for Pagseguro checkout as a payment method for spree 3.

Adds PayPal Express as a Payment Method to Spree store

Leverages the invoicing API in order to seamlessly accept bitcoin denominated payments

A spree extension to use WebPay as a payment method

Ipay88 is a payment gateway service in South East Asian countries. This gem provides integration support for Spree with the gateway

Spree extension for integration with PagSeguro payment. Based on spree_pp_website_standart gem

Payment solutions with GMO services

Parsley-Payment.js bundled for Rails Asset Pipeline

Performing multiple payments to PayPal using the MassPay API

Payment Gateway to Paybox's services

PayPal Client.