Comm Echo is a FREE debug tool for Serial Port, TCP/IP and UDP communication. Comm Echo works like an echo wall for serial port, TCP/IP sever, TCP/IP client and UDP. It displays all received data in Text, Hex or Decimal format. Give Comm Echo a try to see what its really capable of!
Comm Echo Features:
1. Dispaly all received data in Text, Hex or Decimal format
2. Support Serial Port, TCP/IP Server, TCP/IP Client and UDP
3. Enumerate all available serial port on computer

How to Use
1. Download CommEcho.zip and unzip it.
2. Run CommEcho.exe.
3. Click "Setting" button to set the Endpoint. The Endpoint could be a serial port, TCP/IP server, TCP/IP client or UDP.
4. Click "Start" button to open the Endpoint. It begins to display all received data.
5. Click "Stop" button to close the Endpoint.
Tips: Comm Echo can save the current endpoint setting before it close. It will restore the setting when it runs next time.

The license of this software is Freeware, you can free download and free use this ip utility software.