Destination of com0com
The Null-modem emulator is an open source kernel-mode virtual serial port driver for Windows, available freely under GPL license. You can create an unlimited number of virtual COM port pairs and use any pair to connect one application to another. Each COM port pair provides two COM ports, the output to one port is the input from other port and vice versa.
Usually one port of the pair is used by Windows application that requires a COM port to communicate with a device and other port is used by device emulation program.
In conjunction with the hub4com (available for free download at http://sourceforge.net/projects/com0com/files/hub4com/2.0.0.0/ ) the com0com allows you to
Handle data and signals from a single real serial device by a number of different applications. For example, several applications can share data from one GPS device.
Use real serial ports of remote computer like if they exist on the local computer (supports RFC 2217).
The homepage for com0com project is http://com0com.sourceforge.net/ .