Updated Windows 8 represents a fundamental shift in the way Windows works, but is getting better with each update.

Windows RT furthers the gap between tablet and PC computing. Made for mobile processors, how does it stack up?

Microsoft's new server operating system is an uncontroversial success that brings big business tools and features to small business users.

Updated A more detailed look at the new Start Screen menu and running you through the headline features of Microsoft's new OS.

500 new features add up to a fully refreshed mobile phone operating system

The first must-have version of Microsoft Windows for a decade

Updated Windows 7 is set to be the biggest and best Windows OS yet

Is Service Pack 2 enough to stop everyone abandoning Vista for Windows 7?

Microsoft has encountered two big issues when developing its mobile OS: satisfying the needs of consumers and professionals at the same time, and producing an OS that works well in all three formats supported.

Here we're looking at the Business version of Windows Vista, which has all the networking features plus full image-based backup but none of the entertainment features

Between the security improvements and the new interface Windows Vista looks appealing, but are you going to feel happy about paying for it? We take a look at the Home Premium edition, which is the best balance between cost and features

Windows Vista looks appealing, but are you going to feel happy about paying for it? We take a look at the Home Basic version which misses out the snazzy Aero interface

Between the security improvements, the new interface and the major improvements for notebook users Windows Vista looks appealing, but are you going to feel happy about paying for it?