1)   Virtual Null Modem 2.0.2.22 The program emulates one or couples of RS-232 serial ports connected via virtual null-modem cable. It is possible to create the unlimited couples of virtual serial ports on a single PC and connect them in any sequence using virtual null-modem cable. 2)   Network Serial Port Kit 5.1 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.