Mountable rails engine which loads assets (svg files of payment icons) and provides a frozen_record model called PaymentIcon to access these through groups, names of icons, etc.

Stripe Payment Method for Solidus

Package to simplify including the Adyen payments services into a Ruby on Rails application. The package provides functionality to create payment forms, handling and storing notifications sent by Adyen and consuming the SOAP services provided by Adyen. Moreover, it contains helper methods, mocks and matchers to simpify writing tests/specs for your code.

PayPal Express Checkout API Client for Instance, Recurring and Digital Goods Payment.

[Deprecated] It is recommended to use paypal-server-sdk instead. The PayPal Permission SDK provides Ruby APIs for developers to request and obtain permissions from merchants and consumers, to execute APIs on behalf of them. The permissions include variety of operations from processing payments to accessing account transaction history

Accept online payments, create a Platform, and pay out to your sub-entities, sellers and service providers.

[Deprecated] It is recommended to use paypal-server-sdk instead. The PayPal Adaptive Payments SDK provides Ruby APIs to create, process and manage simple and complex (parallel and chained) payments, and pre-approvals using the Adaptive Payments API.

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

Accepting iDEAL, Bancontact, SOFORT Banking, Creditcard, SEPA Bank transfer, SEPA Direct debit, PayPal, KBC Payment Button, CBC Payment Button, Belfius Direct Net, paysafecard, PODIUM Cadeaukaart and ING Home’Pay online payments without fixed monthly costs or any punishing registration procedures.'

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

In the last few years digital currencies have successfully demonstrated their ability to become an alternative financial instrument in many different markets. Most of the technologies available at the moment are based on the principles of Blockchain architecture, including dominating currencies like Bitcoin and Ethereum. Despite its popularity, Blockchain is not the best possible solution for all scenarios. One such example is for fast micro-payments. Zold is an experimental alternative that enables distributed transactions between anonymous users, making micro-payments financially feasible. It borrows the proof-of-work principle from Bitcoin, and suggests a different architecture for digital wallet maintenance.

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, and data encoding) behind the scenes. Providing the end developer with this allows the developer to start integrating immediately without having to write out a mass of boiler plate code.

Lightweight wrapper for Paypal's Adaptive Payments API

Amazon Payments - Login and Pay with Amazon Ruby SDK

[Deprecated] The PayPal Adaptive Accounts SDK provides Ruby APIs to create and manage PayPal accounts, add payment methods to accounts and obtain account verification status using the PayPal Adaptive Accounts API. It is recommended to use paypal-server-sdk instead

PingPlusPlus is the easiest way to accept payments online. See https://pingxx.com for details.

PayPal Express Checkout API Client for Instance, Recurring and Digital Goods Payment.

Balanced is the payments platform for marketplaces.

Ruby client library for integrating with Affirm financing payments

Simple REST API for the CyberSource Global Payments Platform