One of the first things that users who download and install the new Firefox 4 will notice is the interface, which has undergone a full overhaul. Taking a cue from Google Chrome, Firefox 4 now puts tabs up top and has also removed menus in favor of a single tool button. The Firefox 4 interface also is cleaner overall, and has combined the stop and reload buttons into a single button.
After a long beta process, the latest version of the open-source Mozilla Web browser has finally arrived. Firefox 4 includes a completely new interface, improved performance, strong standards support, and new privacy controls. With all other major browsers having recently released new versions, this also means that the current generation of browsers all represent the latest in cutting edge Web technologies, including support for the emerging HTML 5 standard.
In many ways, Firefox 4 is now the safe, reliable, and capable choice of browser. If someone wants to stay away from IE (or wants to run a modern browser on Windows XP) but is turned off by the constant and rapid state of change in Chrome, Firefox is probably the best choice. But that doesn't mean that Firefox doesn't have some interesting new features.
As far as features go, Firefox 4 compares well with browsers such as Microsoft's Internet Explorer 9 and Google's Chrome and the large library of extensions and add-ons for Firefox make it the most extendable and customizable of modern Web browsers. While Firefox 4 has improved on the performance of previous versions, in many tests the Mozilla browser is still behind faster competitors such as Chrome, Internet Explorer, and Opera. Still, the overall improvements in Firefox 4, along with its feature-set, make it a good browser option and a welcome upgrade.