Use Port Listener as a free lightweight utility to listen on the specified port.
BS Editor: Use Port Listener as a free lightweight utility to listen on the specified port. Great for testing port in use issues or port testing. This simple utility runs in your system tray and can listen on the port you specify. You can run multiple instances of the application so that you can test multiple ports in use at the same time. you can free download Port Listener 1.01 now.