Julian Assange came to international attention as the founder of the whistle-blowing Web site, Wikileaks.
1971-
Sergey Brin created Google, the world's most popular search engine. Brin and Larry Page, Google's co-creator, still manage the company and are billionaires.
1973-
Technology entrepreneur James Clark started Silicon Graphics, launched Netscape with Marc Andreessen and created Healtheon, which merged with WebMD.
1944-
Computer scientist and engineer Mark Dean is credited with helping develop a number of landmark technologies, including the color PC monitor, the Industry Standard Architecture system bus and the first gigahertz chip.
1957-
Jack Dorsey is an American businessman best known as the founder of the social networking site Twitter.
1976-
J. Presper Eckert Jr. was the award-winning co-inventor of the first general purpose digital computer.
1919-1995
Douglas C Engelbart is a pioneer in the design of interactive computer environments and the inventor of the mouse.
1925-
1945-
A gifted mathematician, Ada Lovelace is considered to have written instructions for the first computer program in the mid-1800s.
1815-1852
Marissa Mayer led the development of Google's most successful products for more than 10 years and was appointed CEO of Yahoo in 2012, at the age of 37.
1975-
Steve Wozniak is an American computer scientist best known as one of the founders of Apple and the inventor of the Apple II computer.
1950-
Mark Zuckerberg is co-founder and CEO of the social-networking website Facebook, as well as one of the world's youngest billionaires.
1984-