Microsoft is a broadminded company when it presenting free editions of Windows Vista and XP. Though, Redmond Company's liberality does not stop short of giving free downloads of two versions of its Windows client operating system. But together with Vista and XP, Microsoft is delivering 15 free downloads.

Microsoft is presenting Windows Vista Enterprise as a free download for estimation points. More vital fact that you enable to access version of Vista which is generally reserved for Microsoft's Software assurance customers via volume licensing. The operating system is offered as a pre-configured VHD and is time bombed at 30 days.

"For associations with difficult desktop infrastructures, whether large or small, Windows Vista Enterprise is intended specially to help recognize a better return on IT investments. In this VHD, you will have opportunity to road-test new and improved features with management usability and security improvements to Windows Vista platform

As for Windows XP, users enable to download and utilize two versions of second service pack for operating system bunched with Internet Explorer 7 and Internet Explorer 6 and delivered as VPC images for Virtual PC 2007. Both Internet Explorer Application Compatibility VPC Images containing IE7 and IE6 on top of Windows XP SP2.

There are total 13 free download from Microsoft including a collection of software products intended for testing and evaluation.