American multinational financial technology company. Co-founded in 1998 by Peter Thiel, Max Levchin, Luke Nosek, and Elon Musk as X.com. Acquired by eBay in 2002 for $1.5 billion. Spun off as independent company in 2015.

American software company specializing in big data analytics. Co-founded by Peter Thiel, Alex Karp, Joe Lonsdale, Stephen Cohen, and Nathan Gettings in 2003. Went public in 2020. Works with government intelligence agencies and large enterprises.

American venture capital firm founded in 2005 by Peter Thiel, Ken Howery, and Luke Nosek — all PayPal alumni. Has invested in SpaceX, Facebook, Airbnb, Stripe, Lyft, and many other technology companies.