John Warnock

John Edward Warnock (October 6, 1940 – August 19, 2023) was an American computer scientist, inventor, technology businessman, and philanthropist best known for co-founding Adobe Systems Inc., the graphics and publishing software company, with Charles Geschke in 1982. Warnock was President of Adobe for his first two years and chairman and CEO for his remaining sixteen years at the company. Although he retired as CEO in 2001, he continued to co-chair the Adobe Board of Directors with Geschke until 2017. Warnock pioneered the development of graphics, publishing, web and electronic document technologies that have revolutionized the field of publishing and visual communications.

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