Julian Assange came to international attention as the founder of the whistle-blowing Web site, Wikileaks.
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.
Technology entrepreneur James Clark started Silicon Graphics, launched Netscape with Marc Andreessen and created Healtheon, which merged with WebMD.
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.
Jack Dorsey is an American businessman best known as the founder of the social networking site Twitter.
J. Presper Eckert Jr. was the award-winning co-inventor of the first general purpose digital computer.
Douglas C Engelbart is a pioneer in the design of interactive computer environments and the inventor of the mouse.
A gifted mathematician, Ada Lovelace is considered to have written instructions for the first computer program in the mid-1800s.
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.
Steve Wozniak is an American computer scientist best known as one of the founders of Apple and the inventor of the Apple II computer.
Mark Zuckerberg is co-founder and CEO of the social-networking website Facebook, as well as one of the world's youngest billionaires.