Marc Andreessen
Co-creator of the Mosaic browser, co-founder of Netscape and venture capitalist
- Age
- 55 yrs
- Birthday in 246 days
- Works listed
- 3
- Web browser, Essay
- Honours
- 3
- Most recent 2013
- Profile views
- 0
- 0 followers
Marc Andreessen is an American software engineer and investor who co-wrote Mosaic, the first popular graphical web browser, and co-founded Netscape, whose 1995 stock market listing launched the dot-com boom. He co-founded the venture capital firm Andreessen Horowitz in 2009.
Biography
Mosaic
Andreessen grew up in New Lisbon, Wisconsin, and studied computer science at the University of Illinois. At the National Center for Supercomputing Applications he and Eric Bina wrote Mosaic in 1993, which displayed images alongside text and made the web accessible to the public.
Netscape
In 1994 he co-founded Netscape with Jim Clark. Netscape Navigator dominated browsing, and the company’s August 1995 IPO made him a millionaire at 24. Microsoft’s Internet Explorer later overtook it, and AOL bought Netscape in 1999.
Loudcloud and investing
He co-founded Loudcloud (later Opsware), sold to HP in 2007, and invested in companies such as Facebook and Twitter. In 2009 he and Ben Horowitz founded Andreessen Horowitz, one of Silicon Valley’s largest venture firms.
Writing and politics
His 2011 essay “Why Software Is Eating the World” became a Silicon Valley motto. He sits on Meta’s board and has become an outspoken voice in politics and technology policy.
Timeline
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1971
Born in Cedar Falls, Iowa, United States
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1993
Mosaic released
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1994
Co-founds Netscape
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1995
Netscape IPO
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1999
AOL acquires Netscape
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2007
HP buys Opsware
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2009
Founds Andreessen Horowitz
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2011
Why Software Is Eating the World
Notable works
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1993
Mosaic Web browser
With Eric Bina.
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2011
Why Software Is Eating the World Essay
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2023
The Techno-Optimist Manifesto Essay
Awards and honours
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ACM Software System Award
1995
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Queen Elizabeth Prize for Engineering
2013
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Internet Hall of Fame
2013
Did you know?
-
1
He appeared barefoot on the cover of Time magazine in 1996.
-
2
He was paid $6.85 an hour at NCSA.
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3
Netscape’s release of source code led to Mozilla and Firefox.
Connections
Related people
- Eric Bina Technology · Programmer who co-wrote the Mosaic browser and co-founded Netscape Mosaic co-author
-
Jim Clark
Technology · Founder of Silicon Graphics, Netscape and Healtheon
Netscape co-founder
-
Ben Horowitz
Technology · Co-founder of the venture firm Andreessen Horowitz and author of The Hard Thing About Hard Things
Co-founder of Andreessen Horowitz
Also born on 9 July
Frequently asked
Who is Marc Andreessen?
Marc Andreessen is an American software engineer and investor who co-wrote Mosaic, the first popular graphical web browser, and co-founded Netscape, whose 1995 stock market listing launched the dot-com boom. He co-founded the venture capital firm Andreessen Horowitz in 2009.
How old is Marc Andreessen?
Marc Andreessen is 55 years old, born on 9 July 1971 in Cedar Falls, Iowa, United States.
Where is Marc Andreessen from?
Marc Andreessen was born in Cedar Falls, Iowa, United States.
What is Marc Andreessen known for?
Marc Andreessen is best known for Mosaic (1993); Netscape Navigator; Andreessen Horowitz (a16z); “Software is eating the world”.
What awards has Marc Andreessen received?
Notable honours include ACM Software System Award (1995), Queen Elizabeth Prize for Engineering (2013), Internet Hall of Fame (2013).
References
- Marc Andreessen — Wikipedia. Wikipedia. Retrieved 4 November 2026.
- Marc Andreessen — Britannica. Encyclopaedia Britannica. Retrieved 4 November 2026.
- Marc Andreessen — IMDb. IMDb. Retrieved 4 November 2026.
- Marc Andreessen (Q62882) — structured data. Wikidata. Retrieved 4 November 2026.
Includes material from the Wikipedia article “Marc Andreessen”, licensed under CC BY-SA 4.0. That text is available under the same licence. Learn more
External links
About this profile
- Researched by the TrackFame editorial team; reviewed by Sanjay Sokal under our editorial policy
- First published 4 November 2026
- Last updated
Cite this page
“Marc Andreessen.” TrackFame, last updated 4 November 2026. https://trackfame.com/person/marc-andreessen
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