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.

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

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

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

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

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

A rails plugin to add an active_merchant patch for china online payment platform

Lightweight wrapper for Paypal's Adaptive Payments API.

Lightweight wrapper for Paypal's Adaptive Payments API

Additional Payment Gateways for Spree Commerce

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

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.

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.

An API for using the Amazon Flexible Payment Service (FPS).

An API for using the Amazon Flexible Payment Service (FPS).

An API for using the Amazon Flexible Payment Service (FPS).

Ruby API for Amazon Web Services Flexible Payment Service