Which founders came from X.com?

Ex-X.com founders: 7 people who left X.com to start companies

7 people who founded or worked at X.com went on to found 34 companies, including Biz Stone, Elon Musk, Evan Williams, Jack Dorsey and 3 others.

About X.com → Lineage tree: The X.com Mafia →

Founders who came from X.com

Biz Stone

American blogger and co-founder of Twitter (born 1974)

Went on to found

Twitter 2006 Medium 2012 Jelly 2013 West Co.

Elon Musk

Businessman (born 1971)

Went on to found

Zip2 1996 PayPal 1998 SpaceX 2002 Tesla 2003 Hyperloop One 2014 OpenAI 2015 Neuralink 2016 The Boring Company 2016 Thud 2017 xAI 2023 X Corp. 2023 SpaceXAI 2023 X Holdings Corp 2023 America PAC

Evan Williams

American entrepreneur (born 1972)

Went on to found

Blogger 1999 Pyra Labs 1999 Odeo 2005 Twitter 2006 Medium 2012

Jack Dorsey

American entrepreneur (born 1976)

Went on to found

Twitter 2006 Square 2009 Cash App 2013 Bluesky Social PBC 2021 Bluesky 2021 Omacom Foundation 2026

Jeremy Stoppelman

American business executive

Went on to found

Yelp 2004

Noah Glass

American technology entrepreneur

Went on to found

Odeo 2005 Twitter 2006 Olo

Russel Simmons

American businessman

Went on to found

Yelp 2004

How this list is built. A person appears here if they founded or worked at X.com and later founded at least one other company in the graph. Missing someone? Add them.