Windows Networking Network Monitoring
Checks that the DNS of a server is well targeted
Displays the status of the LAN
Detects open ports you're using
Analyze the status of your network
Make sure you're still connected to the Internet
Detect the WiFi networks around you
Detect intruders using your WiFi
WiFi network locator via Google Maps
Analyze open ports with this portable program
Discover how secure your WiFi WPA key is