Famous Quote
“Software is eating the world.”
Why #27
Andreessen co-invented the web browser, founded the company that launched the internet era, and then built a venture firm that funded the next generation of tech giants. Few people have shaped the internet at every level — infrastructure, applications, and investment.
The Story
Marc Andreessen co-created Mosaic, the first widely used web browser, then co-founded Netscape, which brought the internet to the masses and kicked off the dot-com era. After Netscape's legendary IPO in 1995 — which is widely credited with starting the internet gold rush — he co-founded the venture capital firm Andreessen Horowitz (a16z), which has become one of the most powerful firms in Silicon Valley.
Andreessen's 2011 essay 'Why Software Is Eating the World' became a defining thesis for the technology industry, arguing that software companies would dominate every sector of the economy. A16z put that thesis into practice, making early bets on Facebook, Twitter, Airbnb, Lyft, Coinbase, GitHub, Slack, and dozens of other companies that reshaped their industries.
His combination of technical brilliance (he wrote code that changed how humanity accesses information), entrepreneurial success (Netscape's IPO changed Wall Street), and investment acumen (a16z manages $35B+) makes him one of the rare figures who has shaped the internet era at every stage — builder, founder, and funder.
Key Achievements
Co-created Mosaic — the first popular web browser (1993)
Co-founded Netscape — IPO launched the dot-com era (1995)
Co-founded Andreessen Horowitz (a16z) — $35B+ AUM
Early investor in Facebook, Twitter, Airbnb, GitHub, Coinbase
Wrote 'Why Software Is Eating the World' — defining tech thesis
Board member at Meta (Facebook) since 2008
By the Numbers
$35B+
a16z AUM
$2.9B Market Cap
Netscape IPO (1995)
1,000+
a16z Portfolio Companies
16+ Years
Facebook Board Tenure
Fun Facts
He grew up in New Lisbon, Wisconsin (population ~1,600) and taught himself to code.
He wrote the core code for Mosaic while still a student at the University of Illinois.
Netscape's IPO was so hot that shares were supposed to open at $14 but opened at $71.
He once described himself as a 'techno-optimist' and wrote a 5,000-word manifesto defending the label.
He is known for his prolific tweeting — he once posted over 100 tweets in a single day.
Frequently Asked Questions
Who are the greatest entrepreneurs of all time?
The greatest entrepreneurs include Steve Jobs (Apple), Elon Musk (Tesla/SpaceX), Jeff Bezos (Amazon), Bill Gates (Microsoft), and Mark Zuckerberg (Meta). Each built companies that fundamentally changed how the world works — from personal computing and smartphones to e-commerce, cloud computing, and social media.
What makes someone a successful entrepreneur?
Successful entrepreneurs share several traits: the ability to identify unmet needs, willingness to take calculated risks, relentless execution, and resilience in the face of failure. They combine vision with practical problem-solving and are willing to persist long after most people would quit. Capital and credentials matter far less than most people think — resourcefulness beats resources.
Can you become an entrepreneur without a business degree?
Absolutely. Many of the greatest entrepreneurs had no business education. Steve Jobs dropped out of college. Richard Branson left school at 16. Sara Blakely was selling fax machines. Henry Ford had no formal engineering training. Jack Ma was an English teacher. What matters is not the degree — it is the ability to see an opportunity, build something people want, and persist through failure.
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