Use this gem instead of ActiveMerchant gem if you want to use Square's e-commerce APIs (https://squareup.com/developers) with ActiveMerchant. The official ActiveMerchant gem does not support Square because Square shields raw credit card numbers from developers to make PCI compliance easier. This has all ActiveMerchant functionality, plus support of Square's card nonces in the iframe API.

ActiveMerchant integration for Transbank's Webpay service

Stripe Payments Integration with Catarse crowdfunding platform.

Braspag: brazilian gateway, agnostic, support all features in braspag

Kill Bill payment plugin for Paypal Express Checkout.

pay_fu engine

Mountable Ruby on Rails Ecommerce.

Radiant Shop is an attempt at a simple but complete store. It includes Products, Categories, Orders and Credit Card Payments

Spree Engine for Conekta Mexican Payment gateway

The most flexible commerce platform available - designed from the ground up to be as open and extensible as possible.

Activemerchant patch for china online payment platform alipay

Provides an interface to ANZ for the Activemerchant library, fork of github@anujluthra's work

Active Merchant extension to support Inovio payment gateway (f.k.a. Argus)

An ActiveMerchant plugin that provides a full featured BPOINT gateway. Development sponsored by Sentia Australia.

Provide support for CardFlex's standard integration and stored profile tokenization integrations.'

This gem provides integration of ClickandBuy with Active Merchant

Replaces the cyber source gateway with one capable of subscriptions.

This gem integrate Rails with ecpay (綠界科技).

EveryPay gateway for Active Merchant

Fat Zebra support for Active Merchant - temporary gem until support is combined into active_merchant core.