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 inter...

acts_as_payment is a rails plugin that enables you to work with bills.

== DESCRIPTION: Experimental library for working with GoogleCheckout. Currently in use for payment at http://peepcode.com.

== DESCRIPTION: Experimental library for working with GoogleCheckout. Currently in use for payment at http://peepcode.com.

The SCAI interface is used when the merchant wishes to keep the acquirer on her/his own website for the whole duration of the transaction (client payment details transits through *both* the merchant site and the saferpay database ) whereas VT implies a redirect to the saferpay site. == FEATURES/...

provides credit card payments through Cardia

Ruby interface for the Payment Online Direct Connect API

Adds in-store pickup as selectable shipping and payment option during checkout.

A comprehensive Ruby gem for generating loan amortization schedules with advanced features including grace periods, interest-only payments, federal bank holidays, and multiple interest calculation methods

GNU Taler payment API for Ruby

Rails Payment Sandbox helps developers test payment flows locally without hitting real gateways. It simulates Stripe, Razorpay, PayPal, and provides fake transactions with random statuses.

A comprehensive Ruby SDK for Polar.sh, providing easy integration with their payment infrastructure, subscription management, and merchant services.

A lightweight Ruby library to integrate Wompi payments, supporting PSE, Credit Cards, Nequi, and Payment Links.

A Ruby gem for integrating with Digital Kidu Payment Gateway API, supporting pull payments, intra-bank transactions, QR generation, and transaction status verification.

PaddleRails is a production-ready Rails engine that drops a complete subscription management portal into your application in minutes. It's not just an API wrapper—it's a full-stack billing solution that handles the hard parts of SaaS payments: webhooks, plan upgrades, prorations, cancellation fl...

A Ruby gem for integrating with RMA Payment Gateway API, including Payment Authorization, Debit payment request, and Payment OTP confirmation.

Adds Bank Transfer payment method option during checkout.

Rails engine & helpers to integrate TossPayments online payments (script tag helper, configuration, server-side confirm API wrapper, generator).

An engine which contains payment models and services for Supply Chain Financing.

A Ruby gem for managing quotes/budgets for eyeglasses businesses (or any business with advance payments). Track line items, payments, and remaining balances.