Using Virtual Serial Ports Driver XP you can create any number of virtual serial COM ports in your system which will be virtually connected to each other via virtual null-modem cable. For other Windows applications, virtual serial port pair will be seen exactly as two real serial ports connected via null-modem cable. You can transfer files, exchange data or do whatever you want as they were real serial ports.
Two virtual serial ports linked to each other via virtual null-modem cable 
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