Some organizations still keep their customer list in Excel, and even track orders in Excel.
Yes, there are companies that track their entire business in Excel. Excel is an extremely powerful application that can be pushed very far. Because of this, an Excel example has been included in the latest release of FlexPort. Excel can be used as a virtual terminal, payment data for customers "tokenized" and those tokens can be stored within Excel, to be processed again later. This creates a secure / PCI compliant configuration within Excel.