Marc Andreessen, a name that has become synonymous with the tech industry, began his career in the early 1990s as a software engineer at a time when the internet was still in its infancy. He was part of the team that created the Mosaic web browser, a groundbreaking tool that revolutionized how people interacted with the internet, making it more visual and user-friendly.

Andreessen’s fame, however, truly skyrocketed when he co-founded Netscape Communications Corporation in 1994. Netscape Navigator, the web browser developed by the company, became the dominant player in the market, popularizing the World Wide Web and making Andreessen a household name in the tech world.

Marc Andreessen’s Current Net Worth (2025)

As of 2025, Marc Andreessen’s net worth is estimated to be around $1.7 billion. This significant wealth can be attributed to his successful career in the tech industry and his numerous investments.

Career

Marc Andreessen is a prominent figure in the tech industry, known for co-founding the influential venture capital firm Andreessen Horowitz. Prior to this, he co-created the Mosaic web browser, which played a pivotal role in popularizing the internet. Andreessen has also served on the board of directors for several prominent companies, including Facebook and eBay.

Other Ventures

Beyond Andreessen Horowitz, Marc Andreessen has been involved in various other ventures. He co-founded the software company Opsware, which was later acquired by HP. He is also a notable angel investor, having backed numerous successful startups such as Twitter, Instagram, and Airbnb. Additionally, Andreessen is a prominent philanthropist, focusing on education and healthcare initiatives.

Assets

Marc Andreessen’s assets primarily consist of his stake in Andreessen Horowitz and his numerous investments in tech companies. He also owns several properties, including a home in Atherton, California, valued at around $20 million. His art collection, which includes works by artists like David Hockney and Bridget Riley, is also a significant asset.

Annual Income

Marc Andreessen’s annual income is largely derived from his investments and his role at Andreessen Horowitz. As a co-founder and general partner of the firm, he earns a significant portion of his income through management fees and carried interest in the funds. However, the exact figure of his annual income is not publicly disclosed.

Frequently Asked Questions about  Marc Andreesen

Frequently Asked Questions: Marc Andreessen Net Worth

1. What is Marc Andreessen’s net worth?

Marc Andreessen’s net worth is estimated to be around $1.2 billion.

2. How did Marc Andreessen make his money?

Marc Andreessen made his fortune through his successful career as a software entrepreneur and venture capitalist. He co-founded Netscape Communications Corporation, which was one of the leading web browser developers in the 1990s. He also co-founded the venture capital firm Andreessen Horowitz.

3. What is Andreessen Horowitz?

Andreessen Horowitz, also known as a16z, is a venture capital firm co-founded by Marc Andreessen and Ben Horowitz in 2009. The firm focuses on investing in technology startups.

4. What was Marc Andreessen’s role at Netscape?

Marc Andreessen was one of the co-founders of Netscape Communications Corporation. He served as the company’s chief technology officer (CTO) and vice president of technology. He was also a key figure in the development of the Netscape Navigator web browser.

5. When was Netscape founded?

Netscape Communications Corporation was founded in April 1994.

6. What happened to Netscape?

Netscape was acquired by America Online (AOL) in 1999 for $4.2 billion in stock. The acquisition led to the eventual decline of Netscape’s browser business, with Microsoft’s Internet Explorer becoming the dominant web browser.

7. What other companies has Marc Andreessen invested in?

Marc Andreessen has invested in numerous successful technology companies through Andreessen Horowitz. Some of these companies include Facebook, Twitter, Airbnb, and Uber.

8. What is Marc Andreessen’s education background?

Marc Andreessen graduated from the University of Illinois at Urbana-Champaign with a Bachelor of Science degree in computer science in 1993.

9. What is Marc Andreessen’s political affiliation?

Marc Andreessen has donated to both Democratic and Republican political campaigns, but he has not publicly declared a specific political affiliation.

10. What is Marc Andreessen’s philanthropic work?

Marc Andreessen and his wife, Laura Arrillaga-Andreessen, have been involved in philanthropic work, including supporting education, healthcare, and poverty alleviation initiatives. They have also signed the Giving Pledge, committing to donate at least half of their wealth to charitable causes.