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Andreessen

Short answer: Marc Andreessen, born July 9, 1971, in Cedar Falls, Iowa, co-created the Mosaic web browser while at the University of Illinois. Mosaic, the first widely used graphical browser, helped popularize the World Wide Web.

In 1994 he co-founded Netscape Communications, whose Netscape Navigator dominated the early web. He later co-founded the venture firm Andreessen Horowitz (a16z). The footage, credited to a16z speedrun, shows Andreessen speaking.

VideoWrite-up1 sources
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What should you know about Andreessen?

Quick facts. Each one stands alone and has a stable ID you can cite.

  1. July 9, 1971.

    DD-555-F01 · Write-up · Exhibit A (Born)

  2. Graphical browser.

    DD-555-F02 · Write-up · Exhibit B (Mosaic)

Video transcript: Andreessen: Marc Andreessen Co-Created Mosaic as a Student

Did you know, Marc Andreessen is an American entrepreneur born on July 9th, 1971 in Cedar Falls, Iowa. While studying computer science at the University of Illinois, he co-created Mosaic, the first widely used web browser with a graphical interface which played a pivotal role in popularizing the world wide web. In 1994, he co-founded Netscape Communications, whose browser, Netscape Navigator, became a dominant force in the early internet era. NOW YOU KNOW!

Burned-in captions, read frame by frame (see transcript.md) · 23.0s Reel ·

Video coming soonAndreessen · Instagram Reel
Andreessen: Marc Andreessen Co-Created Mosaic as a Student Instagram Reel · · 23.0s

The write-up

Marc Andreessen co-created Mosaic as a student. It helped make the web mainstream.

  1. Exhibit A

    Born

    July 9, 1971.

  2. Exhibit B

    Mosaic

    Graphical browser.

  3. Exhibit C

    School

    University of Illinois.

  4. Exhibit D

    Netscape

    Co-founded 1994.

  5. Exhibit E

    a16z

    Venture firm.

Questions people ask about Andreessen

Browser he co-created?

Illinois.

Source: Write-up · Exhibit A (Born) · Wikipedia: Marc Andreessen

Netscape founded?

Navigator.

Source: Write-up · Exhibit B (Mosaic) · Wikipedia: Marc Andreessen

Birthplace state?

Cedar Falls.

Source: Write-up · Exhibit C (School) · Wikipedia: Marc Andreessen

Venture firm?

a16z.

Source: Write-up · Exhibit D (Netscape) · Wikipedia: Marc Andreessen

University?

Student.

Source: Write-up · Exhibit E (a16z) · Wikipedia: Marc Andreessen

Test Your Knowledge

All quizzes →

5 questions, all from this case file. Answers are revealed instantly.

  1. Browser he co-created?

    1. Mosaic
    2. Chrome
    3. Safari
    4. Opera
    Show the answer

    Answer: A. Mosaic Illinois. Source: Write-up · Exhibit A (Born) · Wikipedia: Marc Andreessen

  2. Netscape founded?

    1. 1994
    2. 2004
    3. 1984
    4. 2000
    Show the answer

    Answer: A. 1994 Navigator. Source: Write-up · Exhibit B (Mosaic) · Wikipedia: Marc Andreessen

  3. Birthplace state?

    1. Iowa
    2. California
    3. Texas
    4. Ohio
    Show the answer

    Answer: A. Iowa Cedar Falls. Source: Write-up · Exhibit C (School) · Wikipedia: Marc Andreessen

  4. Venture firm?

    1. Andreessen Horowitz
    2. Sequoia
    3. Accel
    4. Benchmark
    Show the answer

    Answer: A. Andreessen Horowitz a16z. Source: Write-up · Exhibit D (Netscape) · Wikipedia: Marc Andreessen

  5. University?

    1. Illinois
    2. Stanford
    3. MIT
    4. Harvard
    Show the answer

    Answer: A. Illinois Student. Source: Write-up · Exhibit E (a16z) · Wikipedia: Marc Andreessen

Cite this case file

Easterling, Marcus. "Andreessen." The Detail Department (DetailEnjoyer), case file DD-555, last updated Apr 26, 2025. https://detailenjoyer.com/case/andreessen/

Permalink: https://detailenjoyer.com/case/andreessen/ · Last updated

Markdown version

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