Marc Andreessen
Marc Andreessen is a venture capitalist and software engineer who co-authored the first graphical web browser and co-founded several major technology companies.
Marc Andreessen is an American businessman and venture capitalist who gained early prominence as a software engineer. He is the co-author of Mosaic, which was the first web browser capable of displaying inline images. Following this development, he co-founded Netscape, a pivotal company in the early history of the World Wide Web.
In addition to his early work in web development, Andreessen co-founded the software company Opsware, which was later acquired by Hewlett-Packard. He also established Ning, a platform designed for social networking websites. Since then, he has served as a general partner at the Silicon Valley venture capital firm Andreessen Horowitz.
Andreessen has also engaged in political advisory roles, including becoming an advisor to Donald Trump in 2024. As of June 2026, his professional activities in technology and finance have resulted in a net worth estimated at $1.9 billion by Forbes. He continues to influence the technology sector through his leadership in venture capital.