'Wireless Network Watcher 1.73' and 'IPNetInfo 1.56'

Wireless Network Watcher 1.73

This small but helpful utility can scan your wireless network and display a list of all connected computers. For each computer detected, the utility displays IP address, MAC address, network card, and computer name.

http://www.nirsoft.net/

IPNetInfo 1.56

IPNetInfo is designed to help users find out all kinds of information about their IP (Internet Protocol) address, including country and state name, address range, and contact information (including address, phone, fax, and email).

http://www.nirsoft.net/