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Firefox is an open-source Web browser introduced in 2004 as part of the Mozilla Application Suite. Firefox included almost all the features offered by other browsers at that time, as well as a number of new features, including a bookmarks toolbar and tabbed browsing. Firefox's user interface was also easily customizable with the help of extensions, such as autofill and stock tracker.
Mozilla has introduced multiple versions of Firefox since its launch, with each version incorporating additional features and better security. Its secure version is Firefox 7.0.1, which was released in September of 2011.
The original name for Firefox was Phoenix; it was renamed as Firebird before it was finally brought to market as Firefox. The browser was very popular, and wad downloaded 22 million times in the first 12 weeks after it was introduced. By 2005, Firefox had captured 10 percent of the Web browser market. This increased to 20 percent by 2008, and 25 percent by 2010. Firefox is most popular in Germany and Poland, where it is favored by 51 percent and 46 percent of Internet users, respectively.
Firefox is compatible with multiple operating systems including Windows, Mac OS X, Linux and FreeBSD. Firefox also supports many customizable options and features, including: