[[Image:Firefox-first-run.png|right|thumb|Mozilla Firefox v2.0 running on [[Windows Vista]].|300px]]
'''Mozilla Firefox''' is a free, [[open source]] web browser developed by the [http://www.mozilla.org/foundation/ Mozilla Foundation]. The software is licensed under the ''Mozilla Public License version 1.1'' and is the main competitor of [[Microsoft]]'s [[Internet Explorer]]. The current stable release is version 3.0.67.
Firefox was originally developed as an offshoot of the Mozilla Browser project, developed by [[Netscape]], as a lightweight version of the software. The original Mozilla browser was extremely feature rich, including such things as an [[HTML]] editor, which created a large and correspondingly slow piece of software. Firefox has gone through several name changes, all due to existing trademarks. It was originally named ''Phoenix'', then ''Firebird'' and finally ''Firefox''.