COM by TCP Icon


Forward RS232 via TCP/IP

4.0 Stars (4)
130 Downloads (This Week)
Last Update:
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A very simple software that bidirectionally forwards COM (serial) communication through a TCP/IP connection.

Typical application: you want to use 2 devices (that are connected to each other using RS232 protocol), remotely. With this software you'll be able to operate them in different locations.

Act as TCP server / TCP Client.

Supports multiple clients.

LICENSE: Apache License Version 2.0, January 2004

COM by TCP Web Site


  • Forward physical RS232 COM via TCP/IP and viceversa
  • Supports multiple clients on 1 server


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User Ratings

ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 1 / 5
features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 1 / 5
design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 2 / 5
support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 1 / 5
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User Reviews

  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    Good afternoon! WinXPproSP3 error: Application failed to initialize (0xc0000135). To exit the application, click "OK". Installation NET Framework 2.0 solved the problem.

    Posted 05/25/2016
  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    Looks good. I'll be able to test this on Monday once I get access to the PC that the machine is on, lol. My laptop doesn't have COM ports (lol, of course), so this app will generate an error trying to set "SelectedIndex" to a default of 0 for the list of COM ports detected (which prevented populating other sections). I also have it saving ALL settings now to the config file (thanks for the existing settings framework already setup ;) ). I may convert this to C# and post on GitHub sometime soon if you don't mind (and link to here from there). ;) Thanks.

    Posted 10/16/2015
  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    This is the first program that I found that do this job without changing PIN status of the port on connect! Can you just make it save the connection data to INI file and minimize it to system try at start up?

    Posted 01/08/2013
  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    self vote :p

    Posted 08/31/2009
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Additional Project Details

Intended Audience

End Users/Desktop

User Interface

Win32 (MS Windows)

Programming Language

Visual Basic, Visual Basic .NET



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