by AGG Software 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.
by Cloanto Corporation Connect an Amiga with one or more PCs, and access Amiga resources (e.g. files, floppy and hard disk images, ROM transfer, etc.) from the Windows desktop. Supports serial and TCP/IP connections, including Bluetooth and Wi-Fi.
by ELTIMA Software GmbH It is a software-based solution that allows you to share serial port devices over TCP/IP network turning your computer into low-cost terminal server. So, any serial port device connected to COM port could be accessed from anywhere in the world.