What was Netscape Navigator?
Quick answer
Netscape Navigator was the first commercially successful graphical web browser, released in December 1994 by Netscape Communications, a company founded by Marc Andreessen and Jim Clark. By the mid-1990s it was used by most people on the web, before losing the “browser wars” to Microsoft’s Internet Explorer.
Where it came from
Marc Andreessen had co-created Mosaic (1993) at the University of Illinois’ NCSA, the browser that first made the web popular with pictures alongside text. In April 1994, he and Silicon Graphics founder Jim Clark started Mosaic Communications, soon renamed Netscape Communications, to build a faster, better commercial browser.
The Netscape timeline
- December 1994Netscape Navigator 1.0 launches
- 1995Netscape introduces JavaScript, created by Brendan Eich in about 10 days
- August 1995Netscape’s stock market debut is a huge success, a moment often seen as the start of the dot-com boom
- 1995–1998Microsoft bundles Internet Explorer free with Windows; the “browser wars” begin
- 1998Netscape releases its browser code as open source, creating the Mozilla project
- 1999AOL buys Netscape
- 2004Mozilla releases Firefox
- 2008AOL ends support for Netscape Navigator
Netscape’s lasting inventions
| Invention | Still used? |
|---|---|
| JavaScript | Yes, it runs on almost every website |
| SSL (now TLS), used by HTTPS | Yes; see what HTTPS adds to HTTP |
| Cookies | Yes, for logins and shopping carts |
The browser wars
At its peak, Netscape had an estimated 80–90% of the browser market. Because Microsoft gave Internet Explorer away with Windows, Netscape’s share collapsed. The US government sued Microsoft for antitrust violations in 1998, and a court found Microsoft had abused its monopoly power.
Its legacy
Netscape’s open-source code became Mozilla Firefox, and its ideas shaped every modern browser, including Chrome, Edge and Safari.
The web itself was invented a few years earlier; see who invented the World Wide Web. Browsers still hold onto data; here’s how to clear your cache.
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