I have a custom CMS built that uses Ruby on Rails, and a basic cart system that works well and uses GCheckout and Paypal for its payment system. The site uses a MySQL database to house its product name, description, price, size, etc etc etc. I'm searching for a pre-existing cart system that I could integrate with my CMS that would give me an actual admin backend, so that I could have a customer database and not have to interact with GCheckout and Paypal's admin panels. Does anyone know of such a system? Thanks for your help in advance