Paraben's Inventory Manager - Version 4.5 Whether you are a small business owner or a manager of a division of a larger company, Paraben's Inventory Manager will help you get a grip on your inventory, vendors, and purchase orders. An easy-to-use interface makes managing your inventory easy. Track vendor info, inventory items, purchase orders, invoices, and more. Extensive reporting options with powerful queries make your informatiton easy to access.