Active Merchant is a simple payment abstraction library used in and sponsored by Shopify. It is written by Tobias Luetke, Cody Fauser, and contributors. The aim of the project is to feel natural to Ruby users and to abstract as many parts as possible away from the user to offer a consistent interface across all supported gateways.

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

Official AWS Ruby gem for Payment Cryptography Control Plane. This gem is part of the AWS SDK for Ruby.

Official AWS Ruby gem for Payment Cryptography Data Plane. This gem is part of the AWS SDK for Ruby.

This is the simple REST client for Payments Reseller Subscription API V1. Simple REST clients are Ruby client libraries that provide access to Google services via their HTTP REST API endpoints. These libraries are generated and updated automatically based on the discovery documents published by the service, and they handle most concerns such as authentication, pagination, retry, timeouts, and logging. You can use this client to access the Payments Reseller Subscription API, but note that some services may provide a separate modern client that is easier to use.

Stripe, Paddle, and Braintree payments for Ruby on Rails apps

Resources and tools for developers to integrate Braintree's global payments platform.

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.

Collection of Payment Gateways for Spree Commerce such as Stripe, Braintree, etc.

Additional Payment Gateways for Spree Commerce

If you are tracking any kind of assets the currencies gem is for you. It contains every currency in the ISO 4217 standard and allows you to add your own as well. So if you decide to take sparkly buttons as a form of payment you can use currencies to display the shiny button unicode symbol ☼ (disclaimer: ☼ may not look like a shiny button to everyone.) when used with something like the money gem. Speaking of the money gem, currencies gives you an ExchangeBank that the money gem can use to convert from one currency to another. There are plans to have ExchangeRate provider plugin system. Right now the rates are either set manually or pulled from Yahoo Finance.

Offsite Payments is a simple abstraction library used in and sponsored by Shopify. It is written by Tobias Luetke, Cody Fauser, and contributors. The aim of the project is to put as simple an abstraction as possible on top of offsite (often called hosted) payment pages, and allow contributors to easily help services such as Shopify extend the number of offsite payment services they support.

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

Receipts for your Rails application that works with any payment provider.

[Deprecated] The PayPal REST SDK provides Ruby APIs to create, process and manage payment. It is recommended to use paypal-server-sdk instead

Authorize.Net SDK includes standard payments, recurring billing, and customer profiles

Implemention of Payments Initiation (ISO 20022)

Lightweight wrapper for Paypal's Adaptive Payments API

Lightweight wrapper for Paypal's Adaptive Payments API.

Ruby client library for the GMO Payment Platform.