Payture payment system API for sendind cheques separately from payments

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

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

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.

[Deprecated] The PayPal REST SDK provides Ruby APIs to create, process and manage payment.

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

Implemention of Payments Initiation (ISO 20022)

This library is meant to interface with PayPal's Adaptive Payment Gateway.

Lightweight wrapper for Paypal's Adaptive Payments API

This library is meant to interface with PayPal's Adaptive Payment Gateway.

[Deprecated] 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.

Lightweight wrapper for Paypal's Adaptive Payments API.

Ruby client library for the GMO Payment Platform.

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

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

Adds Alipay Payment as a Payment Method to Spree Commerce

Payment library seeking to make payment interactions simple and reusable.

CIC Payment is a gem to ease credit card payment with the CIC / Credit Mutuel banks system. It's a Ruby on Rails port of the connexion kits published by the bank.

Creates buttons to manage paying with amazon payments. Can be used for direct payments or merchant payments

The gem abstracts away the low-level details of the API, providing a simple and intuitive interface for sending payment requests, checking payment status, and managing payment callbacks