Peter R. Jennings

Author of the first commercially successful chess program for microcomputers, Jennings is a Canadian physicist, interdisciplinary scientist, inventor, software developer, computer chess programmer, businessman, and paraglider. Born in England, his family moved...

Barry Leiba

Developer of Ultimail, an early integrated multimedia e-mail system created with his team at IBM Research, Leiba is a computer scientist and software researcher. His work focused for many years on electronic...

Barry James Mailous

One of the editors of the original Report on the Algorithmic Language ALGOL 68, Mailous also served as a contributing editor to the Revised Report on the Algorithmic Language ALGOL 68. In...

David E. Culler

Inventor of the TinyOS operating system, Culler is a computer scientist who has served as Chair of Computer Science and Associate Chair of Electrical Engineering and Computer Sciences at the University of...

Bernard Galler

American mathematician and computer scientist at the University of Michigan, Galler was involved in the development of large-scale operating systems and computer languages, including the MAD programming language and the Michigan Terminal...

Andy Stanford-Clark

Developer of home automation using Twitter to notify users of necessary changes in the home allowing for substantial energy savings, Stanford-Clark is a computer engineer at the forefront of research into "pervasive...

Grady Booch

Developer of the Unified Modeling Language, Booch got his first programming experience on a Fortran IV while in high school. Graduating from military academy in 1977, he worked as a software project...

Tom DeMarco

Known as one of the developers of Structured Analysis, DeMarco began his career at Bell Telephone Laboratories in 1963, where he participated in the ESS-1 project to develop the first large-scale Electronic...

Kevin A. Stoodley

Conceiver and developer of the Testarossa dynamic compilation infrastructure, which along with the J9 JVM project became the basis for all of IBM's Java language implementations, Stoodley has served as Chief Technical...

Robert Jay Creasy

Project leader of the first full virtualization hypervisor, the IBM CP-40, Creasy later saw his work develop into IBM's highly successful line of mainframe VM operating systems — a family of IBM...

Frances (Fran) Elizabeth Allen

Pioneer in optimizing compilers and the first woman to win the Turing Award, Allen was also the first female IBM Fellow. Allen was an expert in the field of optimizing compilers. As a...

Harlan B. Mills

Pioneer in automata theory and structured programming, Mills transformed software development through his advocacy of mathematical and statistical principles in software engineering. In 1969, Mills was asked to write a program creating...

Ole-Johan Dahl

One of the fathers of object-oriented programming and Simula, Dahl produced the initial ideas for object-oriented (OO) programming in the 1960s at the Norwegian Computing Center (NR) as part of the Simula...

R. Blair Smith

Head of the IBM project that developed the first airline reservation system (SABRE) for American Airlines, R. Blair Smith also served as Manager of Market Analysis and field testing for all proposed...

Grigore Constantin Moisil

Considered the father of computer science in Romania, Moisil made foundational contributions to automata theory, many-valued algebras, and mathematical logic. Grigore Moisil attended primary school in Bucharest, then high school in Vaslui and...

Brian Randell

Developer of a compiler for the English Electric KDF9, an early stack machine, Randell is a British computer scientist and Emeritus Professor at the School of Computing Science, Newcastle University, U.K. He...

Saul Rosen

Chief software designer for the world's first transistorized computer, the Philco TRANSAC S-2000, Rosen left a significant mark on early computing history. Born in Port Chester, NY, Rosen was elected to Phi Beta...

Cecil Wayne Ratliff

Creator of the Vulcan database program, Ratliff worked for the Martin Marietta Corporation from 1969 to 1982 in a progression of engineering and managerial positions. He was a member of the NASA...

Randy Cartwright

Creator of Animation Timer, a stopwatch application for Apple iPhones, Cartwright is a veteran Disney animator and filmmaker. Born in Virginia, Cartwright graduated from UCLA in 1974, where he made his student animated...

Peter Kogge

Designer of the Space Shuttle I/O processor — one of the first multithreaded computers and the first to fly in space — Kogge is a computer engineer and 1993 IBM Fellow who...