Shared Serial Ports 

Shared Serial Port allows you to share real serial ports between multiple applications. All applications will be able to receive data from real serial port simultaneously, as well as send data to it.
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Virtual Serial Port ActiveX CE 

Virtual Serial Port ActiveX CE is a powerful advanced ActiveX Control for Embedded platforms that allows your software to create custom additional virtual serial ports in Windows CE system and fully control them from within your own program.
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Network Serial Port Kit 

Network Serial Port Kit allows you to connect any serial port devices over TCP/IP network or Internet. Program creates and connects up to 254 virtual serial ports at a time. Physical COM ports can be connected over the network as well.
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