My company uses Box and one of the strong points, besides ease of use is their viewer.

As part of our process with scanned documents is the ability to rename the file while in a viewer, and also, to move the file while in the viewer.

We do this mostly with accounting. We can view a scanned or emailed file and then rename the document including the document date and invoice number. The document is held open in the viewer while it is entered into the accounting system. OCR allows us to capture long account or invoice numbers, as well as line items on the invoice where it is subsequently entered in to our accounting system.