David Bunnell is a pioneer of the personal computing industry who founded some of the most successful computer magazines including PC Magazine, PC World and Macworld. In 1975 he was working at MITS in Albuquerque, N.M., when the company that made the first personal computer, the Altair 8800. His coworkers included Microsoft founders Bill Gates and Paul Allen, who created the first programming language for the Altair, Altair BASIC. 
Bunnell grew up in the small town of Alliance, Nebraska, where he was on the state champion cross-country team and where he worked with his father, who was the editor of the Alliance Daily Times-Herald newspaper. During his senior year in high school, Bunnell served as the sports editor of the newspaper.
Bunnell attended the University of Nebraska from 1965 to 1969, where he graduated with a B.A. majoring in history. While at the university, he was active in the anti-Vietnam war movement and was elected president of the Students for a Democratic Society (SDS).
Following graduation, Bunnell worked as a public school teacher in Chicago, 1969–71, and then on the Pine Ridge Indian Reservation in South Dakota. He delivered food to the Indians who occupied Wounded Knee for 71 days beginning on February 27, 1973.
In 1991 Bunnell founded BioWorld, the online business newspaper and print magazine for the Biotechnology Industry, which he sold to Thompson Media Group in 1994.From 1996 to 2002 he was CEO and Editor-in-Chief of Upside (magazine) which became very successful during the dot-com bubble.
In 2007 Bunnell co-founded ELDR magazine with Chad Lewis. The magazine, which covers the boomer market, was named Best New Consumer Magazine by Folio Magazine in 2008.
Bunnell is the author or co-author of the following books:
- An Introduction to Microcomputers by David Bunnell and Adam Osborne, McGraw-Hill, 1982
- Personal Computing: A Beginner's Guide by David Bunnell, Hawthorne, 1978
- Making the Cisco Connection by David Bunnell, Wiley, 2000
- The eBay Phenomenon by David Bunnell and Richard Luecke, Wiley, 2007
- Count Down Your Age by David Bunnell and Frederic Vagnini, MD, McGraw-Hill, 2007
- Lohr, Steve (June 19, 1995). "Adapting 60's Sensibilities to the Internet". The New York Times.
- Bunnell, David. "The Summer of 64". Quora. Retrieved March 2, 2015.
- Zonana, Victor (June 14, 1987). "David Bunnell: Rebel Who Published PC Magazines". Los Angeles Times.
- Lennon, Jean (February 2, 1991). "Computer Magazine Pioneer David Bunnell Goes Online Again". Frisko Magazine (Winter): 22.
- Johnston, Donald (October 2, 2011). "Keep the New Flowing, We'll be there to Cover it". BioWorld Magazine (BioWorld 20th Anniversary Magazine): 3.
- Fost, Dan (April 1, 2002). "Upside's downside". San Francisco Chronicle.
- "ELDR". Folio Magazine (October 2008). October 30, 2008.