https://medium.com/@hnshah/how-github-democratized-coding-built-a-2-billion-business-and-found-a-new-home-at-microsoft-bd94d2dea2a9

When Tom Preston-Werner, Chris Wanstrath, and PJ Hyett got together in 2008 to collaborate on a project, the three friends fully intended for their side hustle to be just that — a weekend project, and nothing more. But it didn’t take long for them to realize that their idea was potentially much bigger than they’d realized. Their idea would become far more than a weekend project: It would transform how people write and share code.

In just 10 years, GitHub has transformed how people code. GitHub hasn’t just made coding easier — it has changed the way software developers think about programming.