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

Implementation of Loan/Mortgage functions in Ruby language. APR function and PMT function. In calculations it includes implementation of bank fee, marketplace fee, fees for each payment to provide the most precise calculation at very high speed.

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

TrueLayer provides instant access to open banking to easily integrate next-generation payments and financial data into any app.This helps easily sign TrueLayer API requests using a JSON web signature.

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.

Simplifies generating payment requests and parsing responses from banks when using iPizza protocol.

iDEAL payment gateway (see http://www.ideal.nl and http://www.activemerchant.org/)

Payment Method for Skrill Transactions for Spree

A Ruby library to make use of the payments API at http://realexpayments.com

A Ruby gem for communicating with the payment platform of Redsys

Ruby on Rails gateway for SIPS/ATOS french online payments API

Provides integration with the Fat Zebra internet payment gateway (www.fatzebra.com), including purchase, refund, auth, capture and recurring billing functionality.

QR-bills support for swiss payments, for full documentation please refer to github repo: https://github.com/damoiser/qr-bills

The Authorize.Net Ruby SDK is meant to offer an alternate object-oriented model of development with the Authorize.net APIs (Version 3.1). The SDK is based entirely off the name-value pair API, but performs the core payment activities (such as error handling/parsing, network communication,...

Payoneer provides businesses with international money transfer services and global payments

EBANX is the market leader in e-commerce payment solutions for International Merchants selling online to Brazil

This is currently a dummy until a public beta is over.

EcoCash is the easiest way to accept mobile payments online. See https://ecocash.co.zw for more details.

Helping rubyist integration with cmb (China Merchants Bank) payment service (招商银行一网通支付) easier.

Integrates the mpay24 credit card and online payment processing system into the spree web shop