Virtual Serial Port Driver Alternatives
Virtual Serial Port Driver is described as 'powerful technology designed specifically for those who develop, test, or debug serial port software and hardware. This solution will provide your system with as many virtual COM interfaces as you need' and is an app. There are 2 alternatives to Virtual Serial Port Driver for Windows. The best alternative is Free Virtual Serial Ports, which is free.
Free Virtual Serial Ports is a Windows user-mode application, which allows you to create software virtual serial ports and emulate physical serial ports behavior.
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.