Mozilla Firefox is a free, open source web browser available for Windows, OS X and Linux, with mobile versions available for Android. It uses the Gecko rendering engine which is based on current web standards.
Mozilla firefox free download for windows 7 ultimate - Mozilla Firefox is a web browser that offers users ease of use and security. It is designed to support HTML5, Javascript, and WebGL. It focuses a lot on user preferences, saving frequently-visited sites, and keeping track of sites that users favorite. Download this browser extension to stop Facebook (and Instagram) from tracking you around the web. Sync your devices. Firefox is available on all your devices; take your tabs, history and bookmarks with you. All you need is a Firefox account.
Features include tabbed browsing, a spell-checker, live bookmarks, Smart Bookmarks, a download manager, private browsing, location-aware browsing and integrated search. It supports extensions for adding new, third-party features, and a wide variety of these are available.
The browser also provides a web development environmenet featuring tools such as Error Console or DOM Inspector and extensions such as Firebug.