Beyonic.com makes enterprise payments to mobile easy. Details: http://beyonic.com

Adds activemerchant gateway support for hash validation, querying transactions, and submitting payment via hosted forms

OffsitePayments for Pay2go_cvs

This gem provides a Rails interface to the Amazon Simple Pay payment service.

A RubyGem that interfaces with the Authorize.net payment gateway

REST API Client for iPay payment gateway

Unofficial fork. Integrate with the Fat Zebra internet payment gateway (www.fatzebra.com.au), including purchase, refund, auth, capture and recurring billing functionality.

A library that interact with fonePaisa payment gateway service.

API Wrapper for SinoPac FunBiz Payment

Ruby SDK for working with Paylike payment services.

A Ruby Interface to Alipay Payment Gateway. Unofficial.

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

Ruby implementation of BlockBee's payment gateway

Base gateway for Unlock's payment gateway integrations

Solidus extension for processing credit card payments using Conekta API

Kassa24 API wrapper (online payments)

This gem make it easier to implement payment system with Paidy

PayUMoney.com Payment Gateway integration for ActiveMerchant

Provides Ruby SDK for AfterPay payment service provider.

Stripe payment processor integration for the Workarea Commerce Platform