Overview

William Henry Gates III (born October 28, 1955), commonly known as Bill Gates, is an American entrepreneur, software developer and philanthropist. He co‑founded Microsoft, a company that helped popularize personal computing. Gates has long been counted among the world’s wealthiest people; for example, in early 2021 he was listed among the top three behind Jeff Bezos and Elon Musk.

Early life and career

Gates grew up in Seattle and showed an early interest in computers and programming. He attended Harvard University but left to pursue a business opportunity with childhood friend Paul Allen, founding Microsoft in 1975. His early work focused on operating systems and developer tools that enabled software for personal computers. Further background and biographical detail are available through dedicated profiles and archives: biography resources and analyses of his business career.

Microsoft and technological influence

Under Gates’s leadership Microsoft developed widely used products, including MS‑DOS, Microsoft Windows and Microsoft Office. These platforms played a central role in establishing software standards for personal and business computing in the late 20th century. Gates served as CEO until 2000, later reducing day‑to‑day responsibilities to focus on strategy and product direction while new executives took operational control.

Philanthropy and later work

In 2000 Gates and Melinda French Gates founded the Bill & Melinda Gates Foundation, one of the world’s largest private foundations. The foundation supports global health initiatives (vaccination, disease eradication), education, and development programs. In the 21st century Gates has shifted much of his time to philanthropy, public writing and speaking on technology, health and climate issues.

Notable facts and controversies

  • Impact: Widely credited with helping to popularize personal computing and software ecosystems used worldwide.
  • Legal and policy: Microsoft faced major antitrust litigation in the late 1990s, a defining episode in Gates’s corporate legacy.
  • Public role: Gates remains a prominent voice on global health, pandemic preparedness and clean energy, sometimes a focal point of public debate.

Gates’s career spans entrepreneurship, product development and large‑scale philanthropy. He continues to engage in public policy discussions, fund scientific and humanitarian work, and publish commentary on technological and global challenges.