Hemantha Kumar Wickramasinghe

Leader of the team that developed atomic force microscopes (AFMs) into fully hardened instruments usable both within IBM and beyond, Wickramasinghe is a distinguished pioneer in the invention and practical uses of...

Edson (Ed) de Castro

Designer of the Data General Nova series of computers, de Castro was a computer engineer born in Plainfield, New Jersey, but his family moved to Newton, Massachusetts when he was six, and...

Van Jacobson

One of the primary contributors to the TCP/IP protocol stack — the technological foundation of today's Internet — Jacobson is renowned for his pioneering achievements in network performance and scaling. He joined...

Ernest (Lee) E. Keet

Founder of Turnkey Systems, Inc. (TSI) and founding director of both the Charles Babbage Foundation and the IT History Society, Keet helped launch one of the pioneering commercial software firms of the...

Samuel (Sam) H. Altman

President of Y Combinator and co-chairman of OpenAI, Altman is an American entrepreneur, programmer, and blogger.

Ahti Heinla

Co-developer of Skype, Heinla is an Estonian programmer and entrepreneur who served as Lead Architect on the project alongside Priit Kasesalu and Jaan Tallinn. They had also originally developed Kazaa, which started...

Charles Ranlett Flint

Founder of the Computing-Tabulating-Recording Company (CTR), which later became IBM, Flint transformed the landscape of business computing. In 1868, Charles Flint graduated from the Polytechnic Institute in Brooklyn, and in 1871 entered the...

Kathleen Booth (née Britten)

Credited with writing the first assembly language and the design of the assembler and autocode (ARC and APE(X)C) for the Birkbeck College computers, Booth made foundational contributions to computer programming. Born in...

John Wilder Tukey

Known for his contributions to the spectral analysis of random processes and the fast Fourier transform (FFT) algorithm, Tukey left a profound mark on modern statistics and signal processing. During World War II,...

William H. Davidow

Computer industry executive, author, and venture capitalist, Davidow has been active in high-technology for more than 30 years. He has continued as an active advisor to MDV. Davidow is the author of...

Curt L. Cotner

Designer and developer of many key features of DB2 for z/OS, Cotner has served as an IBM Fellow and VP/CTO for IBM Data Management. In that role, he held technical and management...

Barbara Grant

Vice president and General Manager of the Data Storage Division of Removable Media Storage Solutions at IBM, Grant held that role as part of a 21-year career with the company spanning a...

John Whitaker Fairclough

Co-designer of Pegasus, which pioneered what was called a general register-set architecture now used in modern microprocessors that are a million times more powerful, Fairclough had a brilliant computer career. He also...

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...

Michael James Lighthill

Pioneer in aeroacoustics and developer of television and communications satellites, Lighthill was a British applied mathematician known for his pioneering work in fluid dynamics. He worked at the National Physical Laboratory, Trinity...

Gary Durbin

Founder of a company in 1970 that introduced Secure, an early software security product, Durbin is a software pioneer and entrepreneur with over thirty-five years of experience. He began his career specializing...

John Richard Patterson

Pioneer of computer dating outside America, Patterson was the first to use a computer to professionally match couples in the 1960s. He was the founder of Dateline Computer Dating.

Anatoliy A. Morozov

Chief Designer of the automated control system of the "Lviv" manufacturing project and the "RADA" system, Morozov is a cybernetics scientist, Corresponding Member of the National Academy of Sciences of Ukraine, Dr....

Peter A. Cunningham

Founder of INPUT, the leading provider of government market intelligence, Cunningham has also served as a founder and board member of the IT History Society. As Chairman of INPUT's board of directors, Peter...

Paul Levine

Producer of Telco central office-based voice mail, Levine has served as an Instructor at the Boston University School of Management and a member of the ITEC faculty, and as a Venture Partner...