Ages of 23 tech founders when they started their first companies

Mark Zuckerberg, Evan Spiegel, and the two Google cofounders were all already millionaires before they turned 30.Although those tech founders saw massive success from their first companies, other major tech players didn't find wealth and fame until their second or third attempts at launching ventures.These are the ages of 23 tech founders when they started their first companies.Visit Business Insider's homepage for more stories.For tech founders like Elon Musk and Jack Dorsey, it took a couple attempts to start the company that would turn them into industry visionaries and make them worth billions of dollars.The founders of Tesla and Twitter, respectively, experienced only minor successes with their first tech ventures at a young age. It took them, and others, a couple of tries before landing on ideas that caught fire and became big names in the tech industry.Although it's often the stories of young college dropouts like Facebook founder Mark Zuckerberg that get the most attention, not all heads of tech companies found success at such a young age. While many big names in tech have already gained their first million in their 20s, others like Oracle founder Larry Ellison didn't come into their wealth until their 30s or later.These are the ages that 23 of the most successful tech founders launched their first companies at: