Marc Andreessen

Marc Lowell Andreessen ( an-DREE-sən; born July 9, 1971) 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. He supported presidential candidates of the Democratic party until 2016. In 2024 he became an advisor to Donald Trump. Andreessen's net worth is estimated at $1.9 billion as of January 2025.

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