- Red panda
A graphical Web browser developed by the not-for-profit Mozilla Corporation and made available free of charge for Windows, Mac, and Linux computers. Firefox began as a fork of the Navigator component of the Mozilla application suite. See also Mozilla.
A popular open source Web browser for Windows, Mac and Linux from the Mozilla project. Including a search box for Google and other major sites, the Firefox user interface is customizable by adding "extensions," such as a stock tracker, autofill and hundreds of others. Quite an Impact Introduced in 2004, Firefox caused much notoriety, and by mid-2005 captured more than 10% of the browser market. Reaching 25% by 2010, it has since declined due to the popularity of the Chrome browser. Many viewed Firefox as a more secure alternative to Internet Explorer (IE), which has always been under attack. Pundits argue whether Firefox is safer because of better design or simply that hackers have no quarrel with open source software.