AnyBook Level 3 is a full-featured business program for publishers. It has all of the features of Level 1 and 2. Those features include the ability to generate invoices and billing statements, keep track of inventory, handle book returns, produce sales reports, record customer payments, track consignment items, create customer mailing lists, calculate shipping weights, prepare bank deposit reports, and process back orders.

In addition to Level 1 and 2 features, the Level 3 program has the ability to convert invoices and statements to HTML, Microsoft Word or text documents. Invoices and statements can be sent via email either in the text of the message or as an attachment. It includes an internal credit card processor, telephony features including two separate phone dialers, currency conversation, and extensive and versatile export and import functions.

AnyBook comes with an extensive and highly illustrated help system, sample files, and a guided program tour.