Focus on RS232 Serial Port & Network communication software.
Comm Tunnel

Comm Tunnel is a FREE tool to connect endpoints for Serial Port, TCP/IP or UDP.



Build a tunnel for endpoints (up to 5 endpoints)
Support Serial Port, TCP/IP Server, TCP/IP Client and UDP
Display data format in Text, Hex, Decimal, Text & Hex, and Text & Dec
Enumerate all available serial port on computer

Comm Tunnel Pro
Support more endpoints and Run as Service

Comm Tunnel connects endpoints


Windows XP, Windows Vista, Windows 7
.Net Framework 2.0

How to Use

1. Download and unzip it.
2. Run CommTunnel.exe.
3. Click "Setting" button to set Endpoints respectively. The Endpoint could be a serial port, TCP/IP server, TCP/IP client or UDP.

Comm Tunnel Interface

4. Click "Start" button to connect the Endpoints. The connection status and the transferred data will also be shown in Log Window.

Comm Tunnel - Connect Endpoints

5. Click "Stop" button to disconnect the Endpoints.

Comm Tunnel will save the current status before it close. It will restore the status when it starts.
Comm Tunnel can be added to Windows' start menu. It can run automatically and start connection immediately after login Windows.