Diomidis Spinellis is a Professor in the Department of Management Science and Technology at the Athens University of Economics and Business, Greece. He is the author of two award-winning books, Code Reading and Code Quality: The Open Source Perspective, as well as dozens of scientific papers. He is a member of the IEEE Software editorial board, authoring the regular “Tools of the Trade” column. Dr. Spinellis has written the UMLGraph tool and code that ships with Mac OS X and BSD Unix. He holds an MEng in Software Engineering and a PhD in Computer Science, both from Imperial College London. Dr. Spinellis is senior member of the ACM and the IEEE.