From Facebook to Tesla, here are the lesser-known cofounders of some of the biggest tech companies in the world

· Most of the world's most famous tech entrepreneurs had help building their companies.
· And while Mark Zuckerberg's and Steve Job's cofounders didn't all become household names, they're still credited with bringing Facebook and Apple to life.
· Tesla, for instance, had four cofounders, and none of them were Elon...