Very simple, small and free program to change the MAC address of a network card.

PeerBlock lets you control who your computer "talks to" on the Internet.

Remote host monitoring utility.

IPaddress is a tiny utility that you can use to determine your IP address and lets you copy it to the computer's Clipboard.

An IP tracking and notification program for network routers and modems.

Displays your internet IP and can inform you when the IP has changed

Run auto or manual scans that return your routers IP address

IPv4 IP Address Randomizer for Windows

A versatile set of Ping tools complete with both automatic and manual settings.

Host Administrator is a freeware 32-bit program that can administrate the TCP/IP hosts file for your local network.

A desktop toolbar application which checks the status of an unlimited number of devices on your network or on the internet

Network Scanner is a free multi-threaded Port, IP, NetBIOS and SNMP scanner with many advanced features.

IP Changer is a utility program that eases the process of changing IP information to one or more network adapters.

Request and copy your public IP Address

Angry IP Scanner (or simply ipscan) is an open-source and cross-platform network scanner designed to be fast and simple to use