jQuery.payment is a general purpose library for building credit card forms, validating inputs and formatting numbers.

Lipisha Payments Ruby SDK.

Fully implements CoinPayments.net API

Decrypt AES256GCM-encrypted data in Apple Pay Payment Tokens

FirstData payment plugin using ActiveMerchant for use with Lolita CMS

Paypal payment plugin using ActiveMerchant for use with Lolita CMS

Actions with payments in MobilePay system

A small sinatra server that supports all the actions Mollie iDeal API needs to make a payment. Now you can test your transactions on you local machine without having to make portforwards

Library for making payments with Mondido, visit https://mondido.com to sign up for an account.

Client for the Mollie API (currently iDEAL-only)

Generate payment order under the multicash spec

Ruby library for integrating with the MundiPagg payment web services

A gem to ease setup of Stripe Marketplace Payments

Paid is the programmatic way to manage payments. See https://paidlabs.com for details.

Payment solutions with GMO services

Parsley-Payment.js bundled for Rails Asset Pipeline

Performing multiple payments to PayPal using the MassPay API

Payment Gateway to Paybox's services