Netscape Announces It Will Open-Source Its Browser Code
Facing a losing battle against Internet Explorer, Netscape made an unprecedented move for a major commercial software company: giving away the source code to its flagship product, and creating Mozilla to steward it.
On January 22, 1998, Netscape Communications announced it would make the source code for Netscape Communicator 5.0 freely available for modification and redistribution — an unusual move for a major commercial software company at the time, and the direct origin of the Mozilla project.
The announcement’s actual terms
Netscape stated that detailed license terms and a developer release of the source code would follow by March 31, 1998, to be distributed through a new site, mozilla.org, which would also host a public forum for developers to collaborate, share enhancements, and receive support. The domain mozilla.org itself was registered by Netscape engineer Jamie Zawinski the day after the announcement.
Why Netscape made this decision
By early 1998, Internet Explorer had been steadily gaining share against Netscape Navigator, driven largely by Microsoft’s Windows-bundling strategy. Opening the source code was, in part, a bet that a broader community of outside developers could help Netscape’s browser compete on features and pace of development in a way its own commercial engineering team alone was struggling to match.
What actually came of it
The initial source release led to a lengthy, difficult rewrite of the browser’s rendering engine, delaying competitive releases for years even as the open Mozilla project slowly matured. It would take until 2004 for the effort to produce Firefox, a standalone browser built on the Mozilla codebase that eventually did meaningfully challenge Internet Explorer’s dominance — long after Netscape itself had ceased to exist as an independent company.
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