Jack Dorsey(United States · ♂)— While working at podcasting startup Odeo, he pitched a status-update messaging service that became Twitter in 2006, later co-founding Square.
Evan Williams(United States · ♂)— A blogging pioneer who created Blogger and sold it to Google, he co-founded Odeo and then Twitter, turning a side project into a global platform.
Biz Stone(United States · ♂)— A designer and blogging-team colleague of Williams at Google and Odeo, he co-founded Twitter in 2006.
Noah Glass(United States · ♂)— The Odeo founder who coined the name 'Twitter' and helped originate the product before being pushed out of the early company.