7. Evan Spiegel, Bobby Murphy

Co-founders, Snapchat

Evan Spiegel and Bobby Murphy came up with the idea of Snapchat while attending Stanford University. Since then, Snapchat has soared to the top of Apple's App Store charts and generates more than 50 million photos shared per day. Snapchat proved to be so promising that Facebook decided to launch a near complete copycat of the app called Poke, which hasn't taken off.