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

Provides Paypal web payments standard support to nimbleshop

Jamm help you make payment without credit cards

A mountable Rails engine to create a payment server that can handle the money in your Bitcoin ecosystem

A Ruby library for integrating with TapPay payment services, supporting credit card payments, refunds, and transaction queries

A Ruby gem for integrating with Zai payment platform APIs.

Payu (polish payment service) rails engine.

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

Lightweight wrapper for Paypal's Adaptive Payments API

A gem to simplify the encryption of data for the Sage PaymentsJS SDK for usage in Rails apps.

Easily integrate the Apruve B2B payment network into your ruby-based application.

Prawn::Icon provides various icon fonts including FontAwesome, PaymentFont and Foundation Icons for use with the Prawn PDF toolkit.

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

A gem for send and verify payments with mellat bank(beh pardakht)

toss payments api

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

Ruby wrapper for PuntoPagos Payment API

Implemention of Payments Initiation (ISO 20022)

WebPay is payment gateway service in Japan. See also https://webpay.jp/.

Ruby gem for Rent$ payment Gateway & Intermediary