Virtual Serial Port SDK
Using Virtual Serial Port SDK you can create a "new" serial port on your computer. This serial port is completely controlled by your application. Other 3rd party applications can connect to this serial port and believe it is a normal physical port. In this way you can emulate all kinds of... Virtual Serial Port SDK is available for . ... NET and ActiveX, on all Windows platforms Windows Mobile/Pocket PC, Windows XP/2k/NT and Windows ME/98. ... 0 are included. ... Samples in C#, VB. ... NET and VisualBasic 6.
http://franson.com/serialtools/SerialToolsSDK.zip - 2Mb - Download

Virtual Serial Port ActiveX CE
Virtual Serial Port ActiveX CE is a powerful ActiveX Control for Embedded platforms that allows your software to create custom additional virtual serial ports in Windows CE system and fully control them from within your own program. Virtual serial ports you will create look and work absolutely... From your application you can control data sent to virtual serial port by other applications and respond to them by sending your own data to virtual serial port, which will be received by other Windows CE applications as if it was sent from a real serial port by a hardware device (GPS module, for...
http://www.serial-port-communication.com/download/vspaxce.exe - 829Kb - Download - Screenshot

datAxe TCP IP serial data converter
datAxe is a flexible converter to solve all your needs between serial data and TCP/IP networks on Windows computers. datAxe software package makes serial data from your PC available on TCP/IP-based networks and makes TCP/IP data available on physical and virtual serial ports of your PC. ... duplAxe component of datAxe makes it possible to build and start up virtual serial port pairs (COM port pairs) to enable also your local applications to exchange serial data directly with each other. ... The main utility of datAxe, the Comport application allows any other computer on the same network...
http://www.labf.com/download/dataxe.exe - 4Mb - Download - Screenshot

Network Serial Port Kit
Network Serial Port Kit allows you to connect any serial port devices over the TCP/IP network or Internet. Creation of local virtual serial ports pairs are available as well. Program creates up to 254 virtual serial ports at a time. Physical COM ports located on remote computer can be connected... For example you can convert usual PC to "Serial Port Server" so then you can connect any serial device directly to a TCP/IP network and communicate with that device from any other PC in the same network or across the Internet.
http://www.network-serial-port.com/network-serial-port-kit.zip - 980Kb - Download - Screenshot

Virtual Null Modem
Null-modem cable is basically used for communication of two RS-232 DTE devices with each other. To create null-modem connection between the devices you need to use two computers or two serial ports of a single computer connected with 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. ... The most reliable way to create null-modem connection is using of virtual serial ports emulated by virtual serial port driver and null-modem cable.
http://www.virtual-null-modem.com/download/vnullmod20.exe - 1Mb - Download - Screenshot

Easy Control
Basic like script engine for building Windows applications, targeted to serial and TCPIP comms. Can handle not only basic tasks like open/close ports, write/read data, but more, like waiting for specific data to be received, process data, sending data in various modes. ... It is the perfect tool for microcontroller hobbyists to debug, control their serial devices, even from a remote PC. ... It has a free tool, Rack Designer, to easily design virtual instruments that can be used to build a cheap but versatile platform for virtual instrumentation.
http://www.easyvitools.com/download/ezctrl20.zip - 861Kb - Download - Screenshot

MarshallSoft GPS Component for Visual Basic
The MarshallSoft GPS Component VB (MGC4VB) library toolkit reads and decodes industry standard GPS NMEA 183 sentences from the RS232 serial port as well as computing great circle distances and bearings. Features of MGC4C include: The most current GPS data is always available on demand * Runs as... The Win/CE (Pocket PC) version can be downloaded from http://www. ... ) * Uses the Windows Win32 API for serial port input - no special Windows driver or support libraries are required * Can also be used with C, C++, C#, Delphi, Visual FoxPro, Visual dBase, Xbase++, PowerBasic and COBOL * Can be...
ftp://ftp.marshallsoft.com/pub/windows/mgc4vb14.zip - 233Kb - Download - Screenshot

MarshallSoft GPS Component for C/C++
The MarshallSoft GPS Component C/C++ (MGC4C) library toolkit reads and decodes industry standard GPS NMEA 183 navigation sentences from the RS232 serial port as well as computing great circle distances and bearings. Features of MGC4C include: The most current GPS data is always available on... The Win/CE (Pocket PC) version can be downloaded from http://www. ... NET, and C# example programs * Uses the Windows Win32 API for serial port input - no special Windows driver or support libraries are required * Supports Microsoft Visual C/C++ (including VC.
ftp://ftp.marshallsoft.com/pub/windows/mgc4c14.zip - 294Kb - Download - Screenshot

AVUSBD
There is a number of the equipment controlled through a serial port from a PC or a terminal. Also there is a lot of the technologies in the market allowing to operate remotely the consecutive devices through the network TCP/IP. These solutions contain, both software and the hardware. ... If the computers are located close - it is not a problem to pull out the USB HASP KEY from one computer and to insert into another. ... There is a problem when the computers are located in different premises, or it is worse than that, in different cities (two sub-units of the same firm).
http://www.virtualserialdriver.com/files/avusbd.zip - 576Kb - Download

Multiport.USB
There is a number of the equipment controlled through a serial port from a PC or a terminal. Also there is a lot of the technologies in the market allowing to operate remotely the consecutive devices through the network TCP/IP. These solutions contain, both software and the hardware. ... If the computers are located close - it is not a problem to pull out the USB HASP KEY from one computer and to insert into another. ... There is a problem when the computers are located in different premises, or it is worse than that, in different cities (two sub-units of the same firm).
http://www.intellidriver.com/downloads/products/multiportusb.zip - 576Kb - Download