Before becoming the philanthropic billionaire he is today, Microsoft cofounder Bill Gates developed a course scheduling software for this high school as a teen. Not only did his school notice his gift for technology, but so did TRW, an automotive company based in Michigan. There, a 16-year-old Gates helped create and develop energy software, for often 18 hours a day.
Before he became a billionaire, and one of the richest people in the world, Facebook founder Mark Zuckerberg turned down $1 million for a music-recommendation software, called Synapse, which he developed as a teenager.
Blastar, a space-themed video game akin to the famed arcade classic Space Invaders, was designed by now Tesla CEO Elon Musk when he was 12. The game’s mission is to take down an alien fleet before it defeats you, the sole space cadet sent to fight it.
Former Uber CEO Travis Kalanick started an SAT-prep business called New Way Academy when he was 18.
As a student at University of California, Santa Barbara, Lyft CEO and co-founder Logan Green built the first iteration of his ride-hailing app — a car-sharing service kids on campus could use if frustrated with public transportation and traffic.
When Google CEO Sundar Pichai was introduced to computers, the first software program he developed was a no-nonsense chess game. He's still an avid chess player today.
Before they cofounded Apple together, Steve Jobs and Steve Wozniak developed a video game for Atari, as teenagers, called Breakout — similar to that of Pong, where there is a paddle and ball moving at different speeds and angles.
At age 15, 10 years before he became a millionaire, Salesforce founder Marc Benioff sold his software application entitled “How to Juggle” for $75 and founded his own business, Liberty Software.
When he was 15, Twitter cofounder and CEO Jack Dorsey wrote code and developed programming for taxi dispatching.