FoxyCart API

FoxyCart
FoxyCart is a customizable shopping cart/checkout application with many features that is designed to seamlessly be integrated into an existing store. FoxyCart is free to use in development and is $19.99/mo for live stores. The FoxyCart API is a RESTful API that can be used to fetch and add/update XML records of Customers, Customer Addresses, Transactions, and Subscriptions.