1971–present · venture capital, software, startups, techno-optimism
Marc Andreessen (born 1971) is an American entrepreneur, investor, and software engineer who co-authored the first widely used web browser, Mosaic, and co-founded Netscape. He later co-founded the influential venture capital firm Andreessen Horowitz (a16z), which has invested in major tech companies like Facebook, Twitter, and Airbnb. He is a prominent advocate for techno-optimism, arguing that technology and markets are fundamental forces for human progress and societal improvement.