Charles Simonyi (Hungarian: “Simonyi Kroly”, pronounced [imoi kroj]; produced September 10, 1948), son of Kroly Simonyi, is a Hungarian-American computer software executive who, as head of Microsoft’s program software group, manage the development of Microsoft’s flagship Office suite of programs. He now heads his own firm, “Intentional Software”, together with the goal of creating and advertising his theory of deliberate programming. In April 2007, aboard Soyuz TMA-10, he became the fifth space tourist as well as the 2nd Hungarian in space. In March 2009, aboard Soyuz TMA-14, he made another visit to the International Space Station. His estimated net worth is US$1 billion.