Windows Sysinternals

The Sysinternals Troubleshooting Utilities have been rolled up into a single Suite of tools. This file contains the individual troubleshooting tools and help files. It does not contain non-troubleshooting tools like the BSOD Screen Saver or NotMyFault.

You can download from the below location
http://technet.microsoft.com/en-us/sysinternals/bb842062

• AccessEnum
  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.
  
  
  
  
  • DiskMon
    This utility captures all hard disk activity or acts like a software disk activity light in your system tray.
  
  
  
  • Disk Usage (DU)
    View disk usage by directory.
    D:\1TempInam\tempSW\Utilities\SysinternalsSuite>du -l 1
    
    Du v1.34 - report directory disk usage
    Copyright (C) 2005-2009 Mark Russinovich
    Sysinternals - www.sysinternals.com
    
        29,489  D:\1TempInam\tempSW\Utilities\SysinternalsSuite
    Files:        94
    Directories:  0
    Size:         30,197,606 bytes
    Size on disk: 30,197,606 bytes
    
    
    AD Explorer
    Active Directory Explorer is an advanced Active Directory (AD) viewer and editor.