Invoice Pro

From Seimitsu Software:

Invoice Pro is a billing and payroll program designed for truckers. You have complete customer, driver, load origin, and destination information. Invoice Pro keeps track of the product you are hauling and the way you want to be paid for the specific product. When the price of fuel rises and it becomes necessary to add a fuel charge, Invoice Pro can do it any way you want. If you are hauling a small load and need to add an additional charge, just make the entry and it is added to the billing.