Entrepreneur and investor Paul Allen is best known for being the cofounder, with Bill Gates, of Microsoft.
1954-
American entrepreneur Jeff Bezos is the founder and chief executive officer of Amazon.com. An e-commerce pioneer, Bezos was instrumental in creating a model for buying and selling products online.
1964-
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-
Steve Chen is best known as the co-founder and chief technology officer of the video-sharing website YouTube. Google bought YouTube for $1.64 billion in stock.
1978-
Michael Dell helped launch the personal computer revolution in the 1980s with the creation of the Dell Computer Corporation, now known as Dell Inc.
1965-
Jack Dorsey is an American businessman best known as the founder of the social networking site Twitter.
1976-
Entrepreneur Bill Gates founded the world's largest software business, Microsoft, with Paul Allen and became one of the richest men in the world.
1955-
Chris Hurley is best known as the co-founder and former CEO of the video sharing website YouTube.com. Hurley and his partners sold YouTube to Google for $1.65 billion in stock in 2006.
1977-
Steve Jobs co-founded Apple Computers with Steve Wozniak. Under Job's guidance, the company pioneered a series of revolutionary technologies, including the iPhone and iPad.
1955-2011
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-
1967-
1973-
American entrepreneur Jimmy Wales co-founded Wikipedia, a free Internet-based encyclopedia operating under an open-source management style.
1966-
Meg Whitman is the successful corporate executive, serving as CEO of eBay and later Hewlett Packard. In 2010 she lost her bid to win the California governorship.
1956-
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-