Null-modem emulator Icon

Null-modem emulator

The virtual serial port driver for Windows.

4.6 Stars (84)
1,774 Downloads (This Week)
Last Update:
Download com0com-3.0.0.0-i386-and-x64-signed.zip
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Windows

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Description

The Null-modem emulator (com0com) is a kernel-mode virtual serial port driver for Windows. You can create an unlimited number of virtual COM port pairs and use any pair to connect one COM port based application to another. The HUB for communications (hub4com) allows to receive data and signals from one COM or TCP port, modify and send it to a number of other COM or TCP ports and vice versa.

Null-modem emulator Web Site

Features

  • com0com: baud rate emulation
  • com0com: pinouts customization
  • com0com: noised line emulation
  • com0com: paired port settings monitoring (baud rate, data bits, stop bits, parity)
  • com0com: hiding 'unavailable' ports from user
  • hup4com: spliting data from one serial device into several virtual serial ports
  • hup4com: redirecting serial to TCP/IP and TCP/IP to serial
  • hup4com: RFC2217 - Telnet Com Port Control Option (client and server)

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User Ratings

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

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

    For those having trouble gettings the driver to work, you should make sure to install the signed version. Works great. Also, the COM ports do not show up in the Ports (COM & LPT) in device manager. They show up in a new device category for com0com and you can't set the port settings as you can on regular ports. Whether that is good or bad I leave to your own judgement.

    Posted 11/18/2016
  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    I found bug :) There is problem when I'm opening one of these virtual port with my app (.NET, VS2008). While second port is open is ok, but when it is closed, main app is 'frozen'. It's 'defrost' in the same time when i opened second port (no data revivied). System is Win7 pro x64

    Posted 02/17/2014
  • 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5

    Good work, the security matter would be omitted on x64 system you can enable/disable testing mode Keep up and raise :-D

    Posted 07/02/2013
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Additional Project Details

Intended Audience

Advanced End Users, Developers, Testers

Programming Language

C, C++

Registered

2005-01-24

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