The X3 cart plugin allows users to select images for ordering or download. Orders gets sent to the website-owners email, who in turn can use the order to provide a service.
How to use the X3 Fotomoto plugin to sell and print products from your X3 website.
How to use the X3 panorama plugin, and how to prepare your panorama sources.
Files gallery is a separate application included in X3 for free, which can be used to browse and manage files in your X3 gallery.