Mozilla Firefox is a free, open source browser for Windows, Linux, and MacOS X. It is small, fast, and has some other advanced features. The main features are: tabbed browsing, which makes surfing the web faster; Pop-ups can be disabled; Custom toolbar; Extension management; Better search features; Fast and convenient sidebar. This version has been completely updated, the code is better, more powerful, including the installation program, interface and download manager has been improved.