Polytrope LLC in Dallas, Texas, is an independent software company specializing in the development of database applications built on the FileMaker Pro platform (FileMaker Pro and FileMaker Go). Polytrope’s owner and principal is William Porter, Ph.D., and he is assisted by a regular team of other talented technology experts. We develop custom development for various industries (including law, medical and education). Polytrope also develops, distributes and supports two vertical market products: CMAssistant (circulation management for bulk distribution publications), and GOODBOOKS (fundraising software for Catholic communities). William Porter writes frequently for Macworld and other technology publications. On weekends, he works as a freelance portrait and event photographer.