Mozilla Firefox 2 is a version of Firefox, a web browser released on October 24, 2006 by the Mozilla Corporation. Firefox 2 uses version 1.8 of the Gecko layout engine for displaying web pages. The release contained many new features not found in Firefox 1.5, including improved support for Scalable Vector Graphics (SVG) and JavaScript 1.7, as well as user interface changes. On March 22, 2006, the first alpha version of Firefox 2 (Bon Echo Alpha 1) was released. It featured Gecko 1.8.1 for the first time. Mozilla Firefox 2.0.0.20 is the final version to support Windows NT 4.0, Windows 98 and Windows Me, although it can run on Windows 95 and Windows NT 3.51 using tweaks. Mac OS X 10.5 support was added October 18, 2007 with version 2.0.0.8. Firefox 2.0 featured updates to tabbed browsing environment, the extensions manager, the GUI, and the find, search, and software update engines; a new session restore feature; inline spell checking; and an anti-phishing feature which was implemented by Google as an extension, and later merged into the program itself. Mozilla ended support for Firefox 2 on December 18, 2008. Overview of changes Links default to open in a new tab. Close button on every tab. Inline spell checking for text boxes. Session restoration after a browser crash. Search suggestion for Google and Yahoo!. New search plugin manager and add-on manager. Web feed previewing. Bookmark microsummaries. Updates to the extension system. Support for Sherlock and OpenSearch. Support for SVG text using svg:textPath. Built-in anti-phishing protection. Search suggestions appear with search history in the search box for Google and Yahoo!. Support for client-side session and persistent storage. Improved feed support. A new NSIS-based installer. JavaScript 1.7. Enhanced security and localization support for extensions. New Winstripe theme refresh: New navigation icons URL bar refresh (New Go button attached to the URL bar) Search bar refresh Tab bar refresh Alltabs button (used to view a popup list of all tabs open) Market adoption & usage of Firefox 2 As one article noted after the release of Firefox 2.0 in October 2006, "IE6 had the lion's share of the browser market with 77.22%. Internet Explorer 7 had climbed to 3.18%, while Firefox 2.0 was at 0.69%." A Softpedia article, however, noted in July 2007 that "Firefox 2.0 has been also expanding its share constantly in spite of IE7. From just 0.69% in October 2006, Firefox 2.0