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...

W. Bruce Croft

A leading contributor to research in information retrieval and the theoretical development and practical use of Bayesian inference networks and language modelling for retrieval, Croft has served as a distinguished Professor in...

Eduardo (Ed) T. Kahan

Developer of the IBM Architecture Description Standard (ADS), used by the IBM WW technical community, Kahan has served as a certified consultant and an active member of the IBM Academy of Technology....

Joel S. Birnbaum

Director of the development of the precursor of Hewlett-Packard precision architecture — the basis for all Hewlett-Packard's RISC computers — Birnbaum has also served as Senior Vice President for Research and Development...

Bobby Murphy

Co-founder of Snapchat, Murphy is a Filipino-American billionaire businessman who also serves as the platform's Chief Technology Officer (CTO). He co-founded Snapchat with Evan Spiegel and Reggie Brown while they were students...

Mark P. McCahill

Developer of POPmail and Gopher, McCahill is an American programmer involved in developing and popularizing a number of Internet technologies from the late 1980s onward.

Kristen Nygaard

Co-inventor of SIMULA and pioneer of object-oriented programming, Nygaard was a computer scientist noted for his social agenda and work with the Norwegian Trade Unions. He was a systems developer and a...

David Tresman Caminer

Pioneer in bringing the LEO computer into active use for the UK catering enterprise J. Lyons and Company, Caminer took a leading role in developing the business applications and was in charge...

Lydia E. Kavraki

Known for research in robotics, bioinformatics, and algorithms, Kavraki left Greece to pursue a PhD in computer science at Stanford University. Drawn to the human potential of robotics, Kavraki studied how robots—from...

Leonard J. Shustek

Founder of the Computer History Museum, Shustek co-founded Nestar Systems Inc., an early producer of networked client-server computer systems, in 1979. In 1986, Dr. Shustek co-founded Network General Corporation, a manufacturer of...

Alexey Leonidovich Pajitnov

Creator of Tetris, Pajitnov developed the iconic game with the help of Dmitry Pavlovsky and Vadim Gerasimov in 1985. The game, first available in the Soviet Union, appeared in the West in...

John R. Opel

Responsible for obtaining a contract with Microsoft to create an operating system for IBM's first personal computer, Opel transformed the trajectory of the PC industry through a pivotal business relationship. A U.S. computer...

Ellis L. Johnson

Founder and manager of the Optimization Center at IBM, Johnson made fundamental contributions to integer programming and combinatorial optimization. He served as Professor Emeritus and the Coca-Cola Chaired Professor in the H....

Robert (Bob) Proebsting

Inventor of DRAM address multiplexing with the MK4096 4096 X 1 bit DRAM introduced in 1973, Proebsting co-founded Mostek in June 1969 and made one of the most significant contributions in DRAM...

Michael Hatzakis

Co-developer of electron beam lithography, PMMA resist, and the "lift off" process, Hatzakis has been a researcher with IBM Research at Yorktown Heights, New York since 1961, serving as a manager of...

Philip S. Yu

Holder of over 300 U.S. patents in data mining, database systems, Internet applications and technologies, Yu is recognized as an IBM Master Inventor and one of the most prolific inventors in computing....

Gerald D. Cohen

CEO and founder of Information Builders, Cohen started an early enterprise database software company.

Evan Williams

Co-founder of Twitter, Williams also founded several other Internet companies, including Pyra Labs (creator of weblog-authoring software Blogger), and has served as CEO of Twitter.

Charles Eric Leiserson

Inventor of the fat-tree interconnection network, a hardware-universal interconnection network used in many supercomputers, Leiserson is also a pioneer developer of VLSI theory. He designed the fat-tree for the Connection Machine CM5,...

Sam Ruby

Co-developer and principal maintainer of the Feed Validator — a tool used to check the validity of HTML, CSS, XML documents, and RSS feeds — Ruby has made significant contributions to web...