Entrepreneur and investor Paul Allen is best known for being the cofounder, with Bill Gates, of Microsoft.
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.
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.
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.
Michael Dell helped launch the personal computer revolution in the 1980s with the creation of the Dell Computer Corporation, now known as Dell Inc.
Jack Dorsey is an American businessman best known as the founder of the social networking site Twitter.
Entrepreneur Bill Gates founded the world's largest software business, Microsoft, with Paul Allen and became one of the richest men in the world.
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.
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.
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.
American entrepreneur Jimmy Wales co-founded Wikipedia, a free Internet-based encyclopedia operating under an open-source management style.
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.
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.