Steve Wozniak | Apple

image credit: Al Luckow/Wikimedia CommonsSteve Wozniak was born on August 11, 1950 in San Hose, California. He attended the University of Colorado and the University of California, Berkeley. Wozniak co-founded Apple Computer with Steve Jobs and engineered the first personal computer.

Stewart Butterfield | Flickr

image credit: etech/FlickrStewart Butterfield co-founded Flickr, a photo sharing website, with Caterina Fake in 2004. Flickr was purchased by Yahoo in 2005.

Theo de Raadt | OpenBSD

Theo de Raadt was born on May 19, 1968 in Pretoria, South Africa. He is the founder of the OpenBSD, OpenSSH, and NetBSD projects.

Tim O'Reilly | O'Reilly Media

image credit: Joi/FlikerTim O'Reilly was born on June 6, 1954. O'Reilly is the founder of O'Reilly Media which is well known for publishing computer manuals with animals on the cover. O'Reilly Media also organizes the very popular Web 2.0 Conference as well the hacker event Foo Camp. O'Reilly Media is also known for its succesful foray into online publishing with Safari Online, a joint venture with Pearson Technology Group. O'Reilly Media is one of the most, if not, the most successful computer book publishing companies ever, being one of the first to publish manuals on relatively new, at the time, computer programming languages.

Tom Anderson | MySpace

image credit: Robert Scoble/Half Moon Bay, USATom Anderson co-founded the social networking site MySpace with Chris Dewolfe in 2003.