Very simple wrapper for payment system PayBoutique

A toolkit for generating and working with bulk payment files in various banking formats.

Ruby Merchant SDK for COINQVEST. Programmatically accept and settle payments in digital currencies.

Klarna Payments and Order Management API integration with Workarea Commerce.

A Ruby library for integrating with PayOS payment services

Ruby wrapper for communicating with SEB.lv i-bank payment API.

Ruby wrapper for Paya ACH payment gateway integration. This is developed by reading Paya documentation and is not official team of Paya

Provides an interface to GoldenPay online payment processing system.

Command line client for Ripple payment platform

Ruby wrapper for interacting with the Chase Paymentech Orbital Gateway XML API

Ruby gem for Rent$ payment Gateway & Intermediary

An API for using the Amazon Flexible Payment Service (FPS) - updated for version 2008-09-17 of the API.

Multibanco is a Portuguese payment method that allows the customer to pay by bank reference. This gem aims to provide a simple way to integrate Ifthenpay's multibanco gateway into your Ruby / Ruby on Rails projects.

miao payment

Rails gem to facilitate simple payments with Ogone.

Provides Ruby APIs to create, process and manage Bank of Baku payments

Accept payments with PayU Latam: http://developerspec.payulatam.com/es/.

Ruby wrapper library for Moyasar Payment Service

A quick and dirty Rails engine for watching Payola payment activity.

ExpressPayments is the easiest way to accept payments online. See https://epayments.network for details.