Create virtual serial ports and connect them via virtual null-modem cables.


Virtual Serial Port Kit allows creating a pair of virtual serial ports connected with virtual null-modem cable. The software provides null-modem connection between two serial communications applications. Communications software interacts with each other via virtual COM-ports in the same way as via hardware COM-ports connected with null-modem cables.

All data written to one virtual COM port will be immediately read from another COM port and vice versa.

How it works

Virtual Serial Port Kit creates a pair of virtual COM-ports connected with a null-modem cable. Virtual serial ports will appear in the list of devices on your computer and will behave as hardware serial ports.

Virtual Serial Port Kit Screenshot

As soon as one serial application opens one virtual COM port and the other application opens the second virtual COM-port, the connection between two serial applications will be establish. Now serial data can be transmitted over virtual COM ports.

Full hardware serial ports emulation

Virtual port

Virtual COM-ports fully emulate internals of hardware COM-ports. Serial applications accept virtual COM-ports as if they were hardware.

Runs as system service


Virtual Serial Port Kit is launched at the system startup before a user's login. Virtual COM-ports are automatically created and stay available even after the system reboot.

Usage Example

There are serial application A and serial application B on the computer. You need to establish bidirectional connection and data transmission between these serial applications. Virtual Serial Port Kit creates virtual serial ports COM2 and COM3. The virtual COM-ports are connected with a null-modem cable and appear in the system as usual hardware COM ports.

Virtual Serial Port Kit Usage Scheme

The application A occupies COM2 and application B occupies COM3. As soon as the applications open COM2 and COM3, two-way data exchange will be established.

OEM License Benefits

OEM License

Virtual Serial Port Kit is available as OEM. The program can be integrated into your software. Developer API allows configuring and controlling Virtual Serial Port Kit in your software.


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