From Owl Software:
Simple Business Invoicing & Inventory (SBII) is a comprehensive sales and inventory management system for small businesses. SBII includes plain-paper invoicing, automatic billing, customer profile reporting, mailing list management, inventory management, and sales tracking. This program can be linked to the Owl Simple Business Accounting program to provide complete tracking of sales income and business expenses. It also offers more reliable database drivers and gives users full Y2K compliance.
Version: Simple Business Invoicing & Inventory 18.104.22.168
It tracks sales, customers, inventory in a concise manner. He will customize it for you, too - and while I thought I would like that, we just adapted his lines to our needs since it's two of us, mostly just me, using the program.
Could use more space on some lines and a country option. I enter foreign addresses in the Notes section.
If you need a simple program for your small business, this is an excellent choice.