The Mozilla project started in March 1998 when Netscape Communications Corporation released the source code of Netscape Communicator. The now abandoned version based on that code is referred to as "Mozilla Classic". Since then, much has been rewritten, including the layout engine, the networking library, and the front-end.
Mozilla 1.0 was finally released on 2002-06-05. Much of the code was used to build Firefox.
Although a lot of Mozilla code is under the original Netscape Public License, some parts of the code are under the Mozilla Public License or dual MPL/GPL.
"Mozilla" was the original project code name for Netscape Navigator and, according to some of the documentation, the correct pronunciation of "Netscape".
[Derived from "Mosaic killer/Godzilla"?]