OpenGateway Billing Engine (API / Control Panel)

OpenGateway is a downloadable PHP application that makes online billing via one (or more) of our integrated payment gateways really easy. Integrates with Authorize.net, PayPal, E-xact, and SagePay. It features an easy-to-use XML API that integrates your applications/web site with the billing engine as well as: * An control panel to manage payments, your settings, automatic emails, customer records, gateways, etc. * Send out automatic customized emails to yourself, the customer, or other email addresses for any number of actions including new subscriptions, payments, recurring payments, cancellations, expirations, etc. * Push notifications of recurring charge events (payments, cancellations, expirations, etc.) to your application via HTTP POST calls. * Create an unlimited number of client accounts with their own unique API and control panel access (with their own payment gateways, settings, etc.). * A 30-second install wizard