Who is entrepreneur, philanthropist, and software developer Bill Gates?
Bill Gates, born William Henry Gates III on October 28, 1955, in Seattle, Washington, is an American entrepreneur, philanthropist, and software developer. He is best known as the co-founder of Microsoft, the technology company he started with Paul Allen in 1975. Gates played a central role in the development and commercialization of personal-computer software, particularly through Microsoft’s Windows operating system and Office productivity applications. He later shifted much of his public work toward global health, education, development, and climate-related philanthropy.
Background/biography
Gates was raised in Seattle in a family that encouraged academic achievement and public service. His father, William H. Gates Sr., was an attorney, and his mother, Mary Maxwell Gates, served on corporate and nonprofit boards. He attended the private Lakeside School, where he gained early access to a computer terminal and developed an interest in programming.
At Lakeside, Gates met Paul Allen, who shared his interest in computers. The two collaborated on programming projects while still young. Gates later enrolled at Harvard University, but left before graduating to focus on Microsoft after seeing the growing opportunity for software in the emerging personal-computer industry.
Technology career and achievements
- Co-founded Microsoft with Paul Allen in 1975.
- Helped develop Altair BASIC, an early programming language product for the Altair 8800 computer.
- Led Microsoft during the expansion of MS-DOS, a widely used operating system for early IBM-compatible personal computers.
- Oversaw the development and growth of the Microsoft Windows operating system.
- Helped establish Microsoft Office as a major suite of workplace productivity software.
- Served as Microsoft’s chief executive officer until 2000 and later stepped away from day-to-day responsibilities at the company.
Microsoft became one of the most influential software companies in the personal-computing era. Gates was the company’s chief executive for many years and became closely associated with its strategy of licensing software to hardware manufacturers. He remained involved with Microsoft after leaving the chief executive role, eventually leaving the company’s board in 2020.
Philanthropy and global health work
- Co-founded the Bill & Melinda Gates Foundation with Melinda French Gates.
- Supported initiatives related to vaccine access, infectious-disease prevention, maternal and child health, education, sanitation, and agricultural development.
- Backed efforts aimed at polio eradication through partnerships with public-health organizations and governments.
- Participated in the Giving Pledge, which encourages wealthy individuals and families to commit a majority of their wealth to philanthropy.
- Invested in and advocated for climate technologies and clean-energy innovation.
Through the Gates Foundation and other investments, Gates has focused on large-scale challenges that affect public health and economic opportunity. The foundation has worked with organizations including the World Health Organization, Gavi, the Vaccine Alliance, and other international and local partners. Its work has also drawn public discussion about the role of private philanthropy in global policy and health priorities.
A defining shift from software to philanthropy
Gates’s public career has been marked by a transition from building a software company to funding and promoting solutions for global problems. He stepped down as Microsoft’s chief executive in 2000, allowing him to devote more time to philanthropy. His later public work has included writing about global development, pandemic preparedness, energy transition, and the risks associated with climate change.
He is also known for publishing annual letters and essays that discuss data, policy, technological innovation, and long-term development goals. His books include The Road Ahead, How to Avoid a Climate Disaster, and How to Prevent the Next Pandemic.
Net worth
Gates has consistently been listed among the world’s wealthiest individuals by major financial publications. His net worth fluctuates with the value of investments and charitable giving, and has commonly been reported in the range of more than $100 billion in recent years. Much of his wealth originated from his Microsoft holdings, while his income and assets have also been associated with investments managed through Cascade Investment and other business interests. These figures are estimates and can change substantially over time.
Did you know?
- Gates wrote his first computer program as a teenager; it was a version of tic-tac-toe that allowed users to play against a computer.
- He and Paul Allen founded Microsoft under the name “Micro-Soft,” combining the words “microcomputer” and “software.”
- Gates attended Harvard University but did not complete his degree; Harvard later awarded him an honorary degree.
- He is an avid reader and frequently shares book recommendations through his personal website, Gates Notes.
- In 2014, he stepped down as chairman of Microsoft to focus more extensively on the Gates Foundation.
