being used today: RUNOFF, a very early text-formatting program which was the basis for roff and nroff TYPSET, the "Project MAC editor", was the first interactive text editor, developed to write documentation PCIP, the first TCP/IP stack for the IBM PC, which became the basis for a company called FTP Software Kerberos, an authentication protocol, part of Project Athena, still widely used today As Technical Director of Project Athena, he supported development of the X Window System, an open-source windowing system, still used and developed on Unix-like systems. References External links home page - Jerome H. Saltzer Publications - Jerome H. Saltzer 1939 births Living people Saltzer, Jerome H. Saltzer, Jerome H. People from Nampa, Idaho Fellow Members of the IEEE Members of the United States National Academy of Engineering MIT School of Engineering alumni MIT School of Engineering faculty Multics people