X.com

X.com was an American online bank founded by Ed Ho, Harris Fricker, Elon Musk, and Christopher Payne in 1999 in Palo Alto, California. It merged with competitor Confinity in 2000, retaining the X.com name, and the company changed its name to PayPal in 2001. Starting in 2023, the x.com domain began to be used for Twitter, which was acquired by Elon Musk in 2022 and subsequently rebranded to X.