Internet Explorer 9 is the new edition of Microsoft's hugely popular web browser. Building on the success of previous editions of IE with new features and a new look, Microsoft has high hopes for version 9.

The first thing you'll notice about Internet Explorer 9 is an overhauled interface. Making the most of the transparent graphical style available in Windows 7 and newer editions of Windows Vista, IE 9 looks sleek, smart and simpler than ever before. Like in Google Chrome, the Address bar and Search box have been merged to create a simpler, more seamless user experience.

Among the new features included in Internet Explorer 9 are better integration with the Windows operating system and a seriously beefed-up security system. IE 9 also lets you 'pin' websites to the Superbar and allows you to bookmark your favorite websites as 'applications' in your OS. The new Performance Advisor add-on identifies add-ons that are slowing Internet Explorer down (a feature badly needed in Mozilla Firefox).

Internet Explorer 9 also offers improved speed and performance, as well as better compliance with web standards and new technologies. IE 9 features decent support for HTML 5 (the new generation of media-rich websites use this language), and now finishes the Acid 3 test with a near-perfect 95/100. New features like hang recovery and InPrivate Filtering provide Internet Explorer a stabler and more secure web experience than most other browsers.

In all, the latest version of Microsoft Internet Explorer 9 is faster and prettier than its predecessors - and really throws down the gauntlet to its competitors. Watch out: the browser wars just got exciting again.