FileFare

FileFare allows you to upload files and sell them online. It takes care of all of the boilerplate for you, you don't have to understand how PayPal or a Credit Card works, you don't have to know how to integrate payment processors, and you don't have to worry about the payment system going bad or down.

It features an extensive user control panel that features lists of uploaded Files, Sales, Purchases, Referrals, as well as an Account Settings page.