The Sysinternals utilities offer a powerful, convenient way to knock out all kinds of Windows tasks.
These are great little tools for getting some heavy-hitting Windows things done and sometimes done better than when using the built-in tools for a task.These are some tools that I find myself using far more than others. 
AccessChk is a command-line tool for viewing the effective permissions on files, registry keys, services, processes, kernel objects, and more.

This simple yet powerful security tool shows you who has what access to directories, files and Registry keys on your systems. Use it to find holes in your permissions.

Active Directory Explorer is an advanced Active Directory (AD) viewer and editor.

An LDAP (Light-weight Directory Access Protocol) real-time monitoring tool aimed at troubleshooting Active Directory client applications.

Bypass password screen during logon.

See what programs are configured to startup automatically when your system boots and you login. Autoruns also shows you the full list of Registry and file locations where applications can configure auto-start settings.

This fully-configurable program automatically generates desktop backgrounds that include important information about the system including IP addresses, computer name, network adapters, and more.

This screen saver not only accurately simulates Blue Screens, but simulated reboots as well (complete with CHKDSK), and works on Windows NT 4, Windows 2000, Windows XP, Server 2003 and Windows 95 and 98.
CacheSet is a program that allows you to control the Cache Manager's working set size using functions provided by NT. It's compatible with all versions of NT.

This new utility enables you to create up to four virtual desktops and to use a tray interface or hotkeys to preview what’s on each desktop and easily switch between them.

This handy command-line utility will show you what files are open by which processes, and much more.

List all the DLLs that are currently loaded, including where they are loaded and their version numbers.

Monitor serial and parallel port activity with this advanced monitoring tool. It knows about all standard serial and parallel IOCTLs and even shows you a portion of the data being sent and received. Version 3.x has powerful new UI enhancements and advanced filtering capabilities.

Process Explorer
Find out what files, registry keys and other objects processes have open, which DLLs they have loaded, and more. This uniquely powerful utility will even show you who owns each process.

Process Monitor
Monitor file system, Registry, process, thread and DLL activity in real-time.

Execute processes on remote systems.

Terminate local or remote processes.

Show information about processes and threads.

View and control services.

The PsTools suite includes command-line utilities for listing the processes running on local or remote computers, running processes remotely, rebooting computers, dumping event logs, and more.

An advanced physical memory usage analysis utility that presents usage information in different ways on its several different tabs.

Registry Usage (RU)
View the registry space usage for the specified registry key.

Dump file version information and verify that images on your system are digitally signed.

Active socket command-line viewer.

VMMap is a process virtual and physical memory analysis utility.

Presentation utility for zooming and drawing on the screen.

To Download All Tools in a Single Zip FIle CLICK HERE