Serial Port Control is an inexpensive royalty-free component. It supports VB, VB.Net, C#, Borland Delphi, Borland Builder. Just put it on a form and you've got all the functionality you need to access an RS232 port.
Serial to Ethernet Connector is an advanced software solution that allows you to share more than 255 serial port devices over network easily turning your computer into low-cost terminal server.
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.
Free Virtual Serial Ports is an user mode driver based software with Virtual COM port rs232 null modem cable emulator. Application provides an easiest way to use virtual serial devices on the computer running Microsoft Windows operating system
Serial over IP Connector is an advanced software solution that allows you to share more than 255 serial port devices over network easily turning your computer into low-cost terminal server.
Connect a serial application to a remote TCP socket. This allows you to utilize modern hardware COM servers without changing your software or exchange data between a TCP/IP application and an old-fashioned program that doesn't support TCP/IP.
Eltima Virtual Serial Port Driver creates any number of virtual serial ports in your system and connects them into pairs via virtual null modem cable. You can create as many virtual serial ports in your system as possible to fit your needs.
Serial Splitter CE splits real serial ports into virtual ones on your mobile phone. It is needed when several applications work with one serial port on your mobile device (like several applications read from one GPS device).
VSPD allows easy management of physical and virtual serial ports. Create complex port bundles, join, split and merge COM ports with this app. Redirect serial data to physical or virtual COM ports on either side of the created complex bundle.
The Serial-TCP program bridges your existing Serial COM port and TCP/IP without the need for changing existing protocol. It works seemlessly and transparently, just like a pair of passive RS-232/RS-485/RS-422 repeaters.