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Mitchell David Kapor ( (listen) KAY-por; born November 1, 1950) is an American entrepreneur best known for his work as an application developer in the early days of the personal computer software industry, later founding Lotus, where he was instrumental in developing the Lotus 1-2-3 spreadsheet. He left Lotus in 1986. In 1990 with John Perry Barlow and John Gilmore, he co-founded the Electronic Frontier Foundation, and served as its chairman until 1994. In 2003, Kapor became the founding chair of the Mozilla Foundation, creator of the open source web browser Firefox. Kapor has been an investor...