Testimonials See what our customers say about our products and services. Books Man and Woman, One in Christ, by Philip Payne. Also see  NT essays by Payne, available for free download. Why Can't Women Do That, by Philip Payne and Vince Haffaker. Welcome to Linguist's Software The Linguist’s Software staff will be out of the office from March 20-24. We will process orders and emails on March 25. Th