1. ListDLLs

List all the DLLs that are currently loaded, including where they are loaded and their version numbers. Version 2.0 prints the full path names of loaded modules.

http://technet.microsoft.com/en-us/sysinternals/bb896656.aspx

2. Process Explorer v12.04

Ever wondered which program has a particular file or directory open? Now you can find out. Process Explorer shows you information about which handles and DLLs processes have opened or loaded.

http://download.sysinternals.com/Files/ProcessExplorer.zip

3. PsExec v1.98

Execute processes on remote systems.

http://download.sysinternals.com/Files/PsTools.zip

4. LogonSessions

List the active logon sessions on a system.

http://download.sysinternals.com/Files/LogonSessions.zip

5. AdRestore v1.1

Windows Server 2003 introduces the ability to restore deleted ("tombstoned") objects.

http://download.sysinternals.com/Files/AdRestore.zip

6. RAMMap

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

http://download.sysinternals.com/Files/RAMMap.zip