High Quality Content by WIKIPEDIA articles! Ziff Davis Inc. (ZD) is an American publisher and Internet company. It was founded in 1927 in Chicago by William B. Ziff, Sr. and Bernard G. Davis. Throughout most of its history, it was a publisher of hobbyist magazines, often ones devoted to expensive, advertiser-rich hobbies such as cars, photography, and electronics. However, since 1980, Ziff Davis has primarily published computer and technology related magazines, and its growing number of websites, spun off from its magazines, have established Ziff Davis as an Internet Information company.