Charles Simonyi

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Lore & Background

Simonyi was born in Budapest, Hungary, the son of a Kossuth Prize-winning professor of electrical engineering. While in secondary school, he worked part-time as a night watchman at a computer laboratory, overseeing a Soviet Ural II mainframe. He learned to program from one of the lab's engineers and by the time he left school, he had developed and sold a compiler to a government department. At age 17, he left Hungary on a short-term visa and did not return. He was hired by Denmark's A/S Regnecentralen in 1966, working with Per Brinch Hansen and Peter Kraft on the RC 4000 minicomputer's Real-time Control System, and with Peter Naur on the GIER ALGOL compiler. He moved to the United States in 1968 to attend UC Berkeley, earning a BS in Engineering Mathematics & Statistics in 1972 under Butler Lampson. Recruited to Xerox PARC by Lampson, he worked alongside Alan Kay and Robert Metcalfe on the Xerox Alto. He and Lampson developed Bravo, the first WYSIWYG document preparation program, which became operational in 1974. He received his PhD in computer science from Stanford University in 1977 with a dissertation on a software project management technique he called meta-programming. At Microsoft from 1981, Simonyi built the applications group and led the development of Word and Excel, pursuing a strategy called the 'revenue bomb' for portability. He introduced object-oriented programming and developed the Hungarian notation convention for naming variables. In 2002, he co-founded Intentional Software with Gregor Kiczales, which was acquired by Microsoft in 2017. Simonyi flew to space twice as a private citizen, becoming the fifth space tourist and the only one to pay for two separate trips to the International Space Station.

Reader's Guide

Charles Simonyi's significance lies in his dual impact on software engineering and space tourism. At Xerox PARC, he contributed to the development of the graphical user interface and the first WYSIWYG word processor, Bravo. At Microsoft, he led the creation of Word and Excel, which became foundational to the company's dominance in desktop productivity software. His introduction of Hungarian notation and object-oriented programming influenced Microsoft's coding practices for decades. Later, his concept of intentional programming aimed to simplify software development by allowing domain experts to describe program behavior in a WYSIWYG manner. As a space tourist, he demonstrated the growing accessibility of private spaceflight. His philanthropic work, including endowed professorships and substantial grants to arts and sciences organizations, reflects a commitment to education and culture. Simonyi's career spans pioneering research, commercial software success, and personal ventures into space, marking him as a multifaceted figure in technology and exploration.

Did You Know?

• Simonyi was the only space tourist to pay for two separate trips to the International Space Station.
• He learned to program while working as a night watchman overseeing a Soviet Ural II mainframe in the early 1960s.
• At age 17, he left Hungary on a short-term visa and never returned.
• He co-developed Bravo, the first WYSIWYG document preparation program, which became operational in 1974.
• As of January 2025, his net worth was estimated at US$7.5 billion.

From Budapest's Mainframe to the World

Born in Budapest in 1948, Charles Simonyi grew up in the shadow of a remarkable father—Károly Simonyi, a Kossuth Prize-winning electrical engineering professor who built Hungary's first nuclear particle accelerator. Young Károly's path to computing began not in a classroom but in a night-watchman's role at a computer laboratory in the early 1960s, where he kept an eye on a massive Soviet Ural II mainframe. There, a lab engineer taught him to program, and by the time he finished secondary school he had written and sold a compiler to a government department, even demonstrating it to a visiting Danish trade delegation. His ambition was simple and urgent: escape communist Hungary, reach the West, and be free. At seventeen, he took a short-term visa and never came back. In 1966 Denmark's A/S Regnecentralen hired him, where he contributed to the RC 4000 minicomputer's real-time control system and the GIER ALGOL compiler alongside luminaries like Peter Naur. That stint in Denmark set the stage for his move to California and a career that would reshape personal computing.

The Xerox Alto and the Birth of WYSIWYG

After earning his undergraduate degree in Engineering Mathematics and Statistics from UC Berkeley in 1972 under the guidance of Butler Lampson, Simonyi was recruited to Xerox PARC during what is widely regarded as the lab's most creative era. There he worked shoulder to shoulder with Lampson, Alan Kay, and Robert Metcalfe on the Xerox Alto, one of the earliest personal computers ever built. His most consequential contribution alongside Lampson was Bravo, the first WYSIWYG document preparation program, which became operational in 1974 and laid groundwork for the graphical interfaces that would later define personal computing. While at PARC he also completed his Stanford PhD in 1977, with a dissertation on a technique he called meta-programming—a framework in which a single metaprogrammer served as designer, decision maker, and communication controller, while individual programmers simply wrote code as described. He remained at the lab until 1981, carrying with him a deep conviction about how software teams should be organized and how users should interact with machines.

Building Microsoft's Application Empire

In 1981, Robert Metcalfe suggested Simonyi visit Bill Gates, and the result was a transformative partnership. Gates asked him to launch an applications group at Microsoft, starting with a WYSIWYG word processor. Simonyi built the organizational structure and the products that would become the company's most profitable lines: Word, Excel, and Excel's predecessor Multiplan. His strategic approach, dubbed the 'revenue bomb,' ran applications on a virtual machine that could be ported to every platform, making the software highly portable even as the industry's focus on MS-DOS eventually reduced the need for that flexibility. Beyond product strategy, Simonyi transplanted two ideas from his Xerox days into Microsoft's engineering culture: object-oriented programming and the Hungarian notation convention for naming variables, both originally part of his doctoral thesis. He also attempted to apply his meta-programming philosophy, turning parts of the company into what observers called a 'software factory,' though that particular experiment did not succeed in practice. He was elected to the National Academy of Engineering in 1997 for his work on desktop productivity software, and he remained one of Microsoft's highest-ranking developers until his departure in 2002.

Space, Intentional Software, and a Lasting Legacy

After leaving Microsoft in 2002, Simonyi co-founded Intentional Software with Gregor Kiczales, a venture built around the intentional programming concepts he had explored at Microsoft Research. The idea: a programmer first constructs a language environment tailored to a specific domain—say, life insurance—and domain experts then describe the desired behavior in a WYSIWYG-like fashion. An automated system uses that description plus the language to generate the final program, with all subsequent changes made only at the high-level description. In 2004 he received the Wharton Infosys Business Transformation Award for the broad industry impact of his IT innovations, and in April 2017 Microsoft acquired Intentional Software, bringing his work full circle. Yet perhaps his most extraordinary post-Microsoft achievement was orbital: he paid his own way to the International Space Station on two separate occasions, making him the fifth space tourist and the sole individual to fund two distinct ISS flights. His broader recognitions include honorary doctorate degrees from the Juilliard School and the University of Pécs, a 2000 Golden Plate Award from the American Academy of Achievement, membership in the American Academy of Arts and Sciences, and a chairmanship of the Institute for Advanced Study's board. As of January 2025, his net worth stood at an estimated $7.5 billion.