Startup mafia · Lineage

The X.com Mafia

Founders who came out of X.com to start their own companies.

7 founders 31 companies Root: X.com →

Each node links through — click a founder or company to keep exploring. ↓ CSV ↓ JSON

Every founder in the X.com lineage

7 founders · 31 companies

Founders who worked at or founded X.com and went on to build their own companies.

E Elon Musk 14 founded

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

J Jack Dorsey 6 founded

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

E Evan Williams 4 founded

Blogger 1999 Pyra Labs 1999 Odeo 2005 Twitter 2006

N Noah Glass 3 founded

Odeo 2005 Twitter 2006 Olo

B Biz Stone 2 founded

Twitter 2006 Jelly 2013

J Jeremy Stoppelman 1 founded

Yelp 2004

R Russel Simmons 1 founded

Yelp 2004