CHARLES SIMONYI

$3.4

BILLION  SELF-MADE SCORE: ^ SOURCE: MICROSOFT AGE: 71 RESIDENCE: MEDINA, WA PHILANTHROPY SCORE: Simonyi made his fortune developing Excel and Word as an early employee at Microsoft. But he started coding years earlier. Growing up in communist Hungary, Simonyi worked as a night watchman at a computer center, ensuring the machines didn’t turn off overnight. In exchange, he was allowed to code and ultimately developed a program for the company.