After changing its stable release policy to a more accelerated pace, Mozilla released Firefox 5 pretty quick after the latest major Firefox version was put out. Firefox 4 was released on March 22, 2011 and this version follows only three months later. Here’s an announcement on the Mozilla Blog website.

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Firefox 4 is knocking at the door and the latest beta release looks just awesome. The seventh beta release introduces several important changes, including a revamped user interface (with the tab location above the address bar and navigation buttons), tab grouping, improved bookmarking system, re-open recently closed windows, built-in synchronizing system, rendering engine improvements, and more. This article contains a screenshot gallery with all the main features and changes brought until now by Firefox 4.

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Opera 11 was released just a few hours earlier today, and it comes with several notable features, a new interface, and many other improvements. Written using the Qt toolkit and taking advantage of its own Presto engine, the Opera browser has been around for years, and it comes with unique features, which make it a popular browser even among the free software users on the Linux platform, with a respectable third position after Firefox and Google Chrome.

Opera 11 first start

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