Use EasyInvoice as an invoice creation and tracking system, a point of sale system, and a product control system. EasyInvoice supports an unlimited number of customers, services and products it can have. It uses encrypted proprietary Data File to secure data.

EasyInvoice is setup so that each invoice created for the customer can be reviewed and items added and deleted from the list, and then sent to batch printing at the end of the month.
When a payment is received, you simply enter the payment details against the invoice(s) It also includes simple reports to simply report and display graphs of the business.
Reports per customer, to find out about a particular customers billing.
Uses proprietary database file with encryption for security. Data can only be viewed from EasyInvoice.
Built in archiving options allows daily easy backup.

The license of this software is Demo,