UserAssistView is a compact portable tool which can tell you more about the programs that others may be running on your PC. This utility decrypt and displays the list of all UserAssist entries stored under HKEY_CURRENT_USER Software Microsoft Windows Current Version Explorer
Windows 8 is the next version of Microsoft Windows. Windows 8 Simulator, which gives a complete feel and taste of Microsoft Windows 8, without installing Windows 8. Microsoft has been released windows developer version.

Kaspersky ONE is a anti-malware software for Mac, Windows, Windows Mobile, Symbian, Blackberry, and Android (both phones and tablets). It also checked the system resources it was using with Activity Monitor, and found that it consistently used less than 1% CPU time
Autoruns for Windows which has the most comprehensive knowledge of auto-starting locations of any startup monitor, shows you what programs are configured to run during system bootup or login, and shows you the entries in the order Windows processes them.

With Microsoft Virtual PC 2007, you can create and run one or more virtual machines, each with its own operating system, on a single computer. This provides you with the flexibility to use different operating systems on one physical computer.