Sysinternals Networking Utilities

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

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

AdRestore
Undelete Server 2003 Active Directory objects.

PipeList
Displays the named pipes on your system, including the number of maximum instances and active instances for each pipe.

PsFile
See what files are opened remotely.

PsPing
Measures network performance.

PsTools
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.

ShareEnum
Scan file shares on your network and view their security settings to close security holes.

TCPView
Active socket command-line viewer.

Whois
See who owns an Internet address.