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Virtual COM Port Driver
Create virtual COM port pairs and emulate serial ports

Windows Virtual COM Port driver allows creating virtual COM ports and connecting them via virtual null modem cable. This way apps or apps and devices can exchange data back and forth. Virtual COM port software creates ports that behave exactly the same way the real ones do, so there is no difference for apps that work with serial devices. With this COM port driver you will never run out of ports - you can create as many virtual ports as needed. There is an OEM license available for our virtual COM port software so you can fully integrate it with your own software solution.

Main features of Virtual COM Port Driver

  • Unlimited virtual COM ports

    Windows virtual COM port driver allows an unlimited number of virtual COM ports to be created. The created ports will be placed in "ports" group in Device Manager and will be easily recognized by communicating software and hardware. There is the possibility to manage access rights for different applications. The main benefit is that hardware ports don't have to be used at all with virtual COM port technology.
  • Emulation of real COM ports

    Our virtual COM port driver knows how to create virtual COM port pairs so that they work exactly like the real ones. All real COM port settings are fully emulated with strict baudrate and HandFlow control and a serial line break. WDM, WMI, Power Management, PnP are all supported thanks to an advanced Windows kernel driver technology. Virtual COM port works on Windows 10, is compatible with API COM and supports all Windows messages.
  • Signal lines support

    Standard hardware signal lines (DTR/DSR, RING, ERROR, RTS/CTS, DCD, etc.) are supported and just as in real connection DTR is connected with DSR or DCD, and RTS of a local port connects to CTS of a remote port. You have the possibility of selecting an existing loopback pinout or creating your own (based on your hardware configuration).

Virtual Serial Port Driver Licenses

OEM License permits you to embed Virtual Serial Port Driver technology into your own software or hardware products. OEM license grants you the right for unlimited redistribution of Virtual Serial Port Driver as an integral part of your software. OEM license is a royalty-free one-time purchase.

OEM License

Virtual Serial Port Driver Inside Your App

Purchasing the OEM license you get:

  • OEM documentation on how to work with our driver directly
  • Example for creating a class which demonstrates the possibility to create the ports like in VSPD (visible and invisible ports)
  • vspdctl.DLL - wrapper for a driver for manipulations with virtual serial ports on a higher level
  • Supported IDEs

OEM For Developers
Sign up for the API evaluation program and integrate it into your product.

Source Code License

Ordering Source Code license for Virtual Serial Port Driver you receive all extensively commented programming source code of the driver (GUI sources are not included). In addition, we provide technical and information support by email, IMs and phone, and high-end consulting services. Our leading developers will help you implement Source codes and understand the advanced part of the product.

Site Licensing

Unlimited Site License grants you the right to install and utilize Virtual Serial Port Driver application with GUI on unlimited number of computers by all workers of your company worldwide. It is the ideal solution if your company has representation offices in the different parts of the world.

If you know the certain number of computers to be equipped with VSPD you may consider obtaining Limited Site License. The advantage of Site Licensing comparing to multiple Single licenses is one license key for all company computers.

Full features list

No limitation on the quantity of virtual COM port pairs to be created
Virtual COM ports are the exact copies of the real ones - no software is able to differentiate them. Instructions include the clear step by step guide on how to create virtual COM port emulation
Control Virtual serial port right from your own application using Dynamic Link Library that comes with Virtual COM Port Driver (OEM only)
Virtual serial ports’ link is noticeably faster compared to real null-modem cable connection. It hinges on your processor speed only (a typical transfer speed is around 5.5 MB/sec)
Real COM ports remain unoccupied - your computer may have even no real ports at all
Possibility of creating ports specifically for the ongoing user session. RDP users can use the same name for the port they create in every user session (for example: COM1)
Enabling automatic ports’ list update will let you see all the created pairs from other user sessions
Instant creation of ports allows managing them even prior to their detection by PnP manager
Strict Baudrate Emulation option
Possibility to remove ports, including the ones that are opened by other software
What customers say
  • We are using VSPD for testing out Geographic Information System software connectivity with a virtual GPS (software simulation). The GPS emulator is simulating the output we normally receive from a GPS navigator.
    Bjørn Krangnes

Overall rating 4.9
based on 97 reviews

Let's get started

Virtual Serial Port Driver for Windows
Demo version limitations
• 14-day fully-functional trial
System Requirements
Windows (32-bit and 64-bit): XP/2003/2008/ Vista/7/8/10, Windows Server 2012, Windows Server 2016
Latest Update
Version 9.0.567 (6th Aug, 2017) Release notes
/ / Virtual Serial Port Driver