Forbes 400: America's Top 15 Richest Techies


1. Bill Gates

For the 20th year straight, billionaire Bill Gates, 57, remains the richest American. The co-founder of Microsoft is also the world's richest person, according to Forbes. Not bad for a man who has given away $28 billion of his own personal wealth to the Bill & Melinda Gates Foundation.

Forbes 400 Ranking: 1

Net Worth: $72 billion