From the developer: "Serial Splitter is advanced Win32 application, based on Windows NT kernel drivers technology. It allows you to share real serial port between several applications so way, that all application will receive same data from real serial port simultaneously. It is achieved by creating virtual serial ports, which are exact copies of real one. Every application will think that it is working with serial port in exclusive mode. One of them will be able also to send data to real serial port. Virtual Serial Ports can have any port number from 1 to 255."