Wireless Network Watcher: Who is using your WiFi
Wireless Network Watcher is a Portable Free Network Monitoring tool. It can be used to view or see who is using your Wireless Network (Who is on your WiFi). The tool scans and creates a list of every computer and device that is currently connected to your wireless network. The IP address, device name, MAC address, and network adapter manufacturer is displayed for each computer connected to the wireless network.