Performing multiple payments to PayPal using the MassPay API

PayPal Client.

Payfort Start is the easiest way to accept payments online in the middle east. See https://start.payfort.com for details.

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

payment help returns you with the strings of information depending on the profile details and your order total price with help of bank api database

Paymentwall is the leading digital payments platform for globally monetizing digital goods and services.

Client that enables access to the Payson payment gateway API.

Payzen payment form generator

Payoneer provides businesses with international money transfer services and global payments

Pin is the easiest way to accept payments online. See https://pin.net.au/ for details.

Postino allows you to generate Italian postal payment forms in PDF format using Prawn.

Add social payments to your business by adding a ‘Pay with Pygg’ button to your site!

TPaga Payment Gateway API [Learn about TPaga](https://tpaga.co) [More information about this library] (http://tpaga.co/docs)

Embed QuickPay's secure payments directly into your Ruby applications. Learn more at https://tech.quickpay.net

The PayPal REST SDK provides Ruby APIs to create, process and manage payment.

Module for Stripe payment functionality in the Trado Ecommerce platform.

A payments module for Rails

Moncash sdk to perform and retieve payment to moncash api

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

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).