Short description of Serial Port Splitter 3.9: Serial Port Splitter allows to share dataflow of one COM port between several applications or vice versa to join dataflow of several COM port devices to one application. Such program universality is achieved by means of virtual serial ports technologies. Moreover Serial Port Splitter allows to setup READ/WRITE or READ ONLY mode for splitted ports and READ/WRITE or WRITE ONLY mode for joined serial ports.