It's been said that most successful entrepreneurs don’t see their first million until they hit the 30. That might have stood true a decade ago, but modern times have shown that anyone with an innovative idea and computer can strike it rich before reaching the big 3-0. Take a look at these 25 young gunners. Some started their million- and billion-dollar enterprises as teenagers, while others found inspiration later in life and focused on their pursuit of monopolizing the tech sector. As we said the last time we did this list: you can either become glum and sad, or you can get inspired and shoot for the stars. From the geniuses behind your favorite smartphone app to online storage kingpins, here are the 25 Richest Tech Entrepreneurs Under 30.