This biography of Marc Andreessen explores the life and career of the pioneering tech entrepreneur. It covers his early years growing up in Wisconsin, his college years at the University of Illinois, and his rise to fame as the co-founder of Netscape Communications. It also looks
Marc Lowell Andreessen is an American businessman, venture capitalist, and former software engineer. He is the co-author of Mosaic, the first web browser to display inline images; co-founder of Netscape; and co-founder and general partner of Silicon Valley venture capital firm Andreessen Horowitz. He co-founded and later sold the software company Opsware to Hewlett-Packard; he also co-founded Ning, a company that provides a platform for social networking websites. In 2024, he became an advisor to Donald Trump. As of June 2026, Forbes estimated Andreessen's net worth at $1.9 billion.