Investor and software engineer who co-authored Mosaic, the first popular internet browser. He also co-founded Netscape Communications Corporation.
He attended the University of Illinois at Urbana-Champaign where he earned a degree in computer science.
He co-founded Andreessen Horowitz, the Silicon Valley venture-capital firm.
He married Silicon Valley Social Venture Fund founder Laura Arrillaga in 2006.
He became well-versed in the World Wide Web open-standards philosophy of Tim Berners-Lee while employed with the University of Illinois' National Center for Supercomputing Applications.