History of Mozilla Application Suite - Rewriting From Scratch

Rewriting From Scratch

Ultimately, the Mozilla core developers concluded that the old code could not be salvaged. As stated on the October 26, 1998 development roadmap, it was decided to scrap the whole code base and rewrite it from the ground up. The resulting plan included, among other things, the creation of a whole new cross-platform user interface library and a new layout engine.

Few observers foresaw the result. On December 7, 1998, Netscape released a special "preview" based on the Gecko layout engine. Gecko had already been in development for some time at Netscape under the internal name NGLayout (short for "Next Generation Layout"). It was noticeably faster and smaller than its predecessor (known as Mariner). One widely publicized feature of the first Gecko preview release was that it fit on a single 1.44 MB floppy disk, making it about one tenth the size of most contemporary browsers.

The prompt release of Gecko led many to believe that a complete browser could not be far behind. However, the first release of the layout engine was far from bug- and crash-free, and even further from being ready for the prime-time. Producing a fully functional web browser required much more than the nascent rendering engine: the Mozilla developers soon envisioned a project more ambitious than a simple web browser. The new Mozilla (internally codenamed "Seamonkey") would be a platform for Internet applications, with a fully programmable user interface and a modular architecture. This Mozilla would function equally well as a host for email client, instant messaging client, news client, or any number of other applications.

Due to the effort required for this massive rewrite, the project fell far behind its original projected deadlines. In the years that followed, skepticism about Mozilla grew widespread, and some doubted that a finished Mozilla browser would ever see the light of day. However, the project persisted, continuing uninterrupted through both the purchase of Netscape by AOL and the end of the dot-com boom.

By June 5, 2002, the Mozilla project had produced version 1.0 of the browser that worked on multiple operating systems, including Linux, Mac OS, Microsoft Windows, and Solaris. The browser was praised for introducing new features that Internet Explorer lacked, including better support for user privacy preferences and some interface improvements. Additionally, the Mozilla browser became a de facto reference implementation for various World Wide Web Consortium standards, due to its strong support for those standards. Recent versions of Mozilla are highly customizable and include advanced features such as cookie, popup, password and image management, and tabbed browsing.