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

Adyen HPP payments for Solidus Stores

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

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

Adds payment method for robokassa.ru

Our APIs allow easy and secure access to bank account data and payment initiation. The account data accessible are account holder's personal information, account balances, transaction history and much more. The available payment methods depend on the banks implementation but typically are domestic transfers, SEPA credit transfer, instant SEPA credit transfer, fast payment scheme, and SWIFT international payments.

Allows easy calculation of revenue sharing by app and in-app purchases. Munges the monthly CSV reports from Google Play or Amazon Android app stores. Does Amazon currency conversions and verifies against payment amounts.

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

M-Pesa SDK for Ruby is an unofficial library aiming to help businesses integrating every M-Pesa operations to their Ruby applications.

Simple rails engine to add payments to your web application using sermepa standard web tpv

Stripe Payments Integration with Catarse crowdfunding platform.

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

Add Ogone payments functionality to your Rails application

EPC QR code for SEPA payments in any format

Qiwi payments solution

Online payments using dotpay.pl

Balanced is the payments platform for marketplaces.

Verifies webtopay.com (mokejimai.lt) payment data transfer

Add support to ActiveMerchant for the Sermepa payment gateway by Servired used by many banks in Spain

A Jekyll plugin to add Web Monetization API payment pointers to your site