Serial Monitor
Software serial port monitor Rs232 sniffer with protocol analyzer and packet data logger. This monitoring utility can spy, capture, view, log, analyze, test com ports activity performing com port connection and traffic analysis with data acquisition and control. ... Serial Monitor can be successfully used for monitoring data flow between serial devices and Windows application, debugging com port connections, developing, reverse-engineering and implementing serial protocol, serial device driver development, serial hardware development, research the functionality of any third-party software...
http://www.hhdsoftware.com/Download/serial-monitor.exe - 1Mb - Download - Screenshot

Free Serial Port Monitor
Free software serial port monitor, Com Rs232 sniffer with communication packet data analyzer. This monitoring utility can spy, capture, view, analyze, test com ports activity performing com port connection and traffic analysis with data acquisition and control. ... Serial Monitor can be successfully used for monitoring data flow between serial devices and Windows application, debugging com port connections, developing, reverse-engineering and implementing serial protocol, serial device driver development, serial hardware development, research the functionality of any third-party software...
http://www.serial-port-monitor.com...load/free-serial-port-monitor.exe - 3Mb - Download - Screenshot

Serial Port Terminal
Advanced Serial Port Terminal is a session-based, multi-purpose application that provides simple communication interface to connect to any serial port device (modem;fax;GPS;mouse;printer and so on). Whether you want to connect to remote computer using null-modem cable, send or receive various... Advanced Serial Port Terminal allows you to open as many serial ports as you like (including virtual serial ports); dynamically change serial port settings without necessity to close and reopen current port; adjust baudrate, databits, parity, stop bits, flow control parameters; save all received...
http://www.virtualserialport.com/download/serial_port_terminal.exe - 2Mb - Download - Screenshot

Serial Port Monitoring Control
Serial Port Monitoring Control (SPMC) - RS232 Data Acquisition and Com Port Control Component Library, Modem Access Component. Connection Sniffer and Port Test Software Library. The library lets you enumerate all installed serial devices, including, but not limited to serial ports and modems. ... After you get an instance of the serial device, you can create a monitor object and attach to the device to receive monitored data and events. ... All kind of PnP serial devices as well as virtual devices are also supported.
http://www.hhdsoftware.com/Download/hhdspmc.exe - 470Kb - Download - Screenshot

Virtual Serial Ports Driver XP2
Virtual Serial Ports Driver (VSPD) is a Windows device driver. Using it you can create any number of virtual serial COM ports in your system which will be virtually connected to each other. For example, after installing VSPD, you will have Virtual Serial Port COM5 and Virtual Serial Port COM6... These ports will behave like real common serial ports to other Windows applications. ... So, the application, that listening COM5 will get all data, sent by other application to COM6 and vise-versa. ... These ports will not interact with any hardware.
http://www.mks.zp.ua/vspdxp.exe - 634Kb - Download - Screenshot

Virtual Serial Port Driver 9x
Virtual Serial Ports Driver (VSPD) is a Windows device driver. Using it you can create two virtual serial COM ports in your system which will be virtually connected to each other. For example, after installing VSPD, you will have Virtual Serial Port COM5 and Virtual Serial Port COM6 added to... These ports will behave like real common serial ports to other Windows applications. ... So, the application, that listening COM5 will get all data, sent by other application to COM6 and vice versa. ... These ports will not interact with any hardware.
http://www.virtualserialport.com/download/vspd2demo.exe - 489Kb - Download

Serial Port Redirector
Serial Port Redirector is used to 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 can only connect to a serial port. ... With Serial Port Redirector, you can easily control remote hardware COM servers via a TCP/IP network from your serial application designed to work with locally connected devices only. ... Serial Port Redirector creates a two-way bridge between a serial application and a specific TCP port at a specified...
http://www.serial-port-redirector.com/serial-port-redirector.zip - 772Kb - Download - Screenshot

Virtual Serial Port Driver XP4
Virtual Serial Port Driver XP4 creates two pure virtual serial ports in your system which are virtually connected to each other. For other Windows applications, virtual ports will be seen exactly as two real serial ports connected via null-modem cable. ... 0 you can connect one application to another using virtual serial ports pair. ... Of course, you can transfer files, other data or do whatever you want as it was real serial ports. ... With Virtual Serial Port Driver XP 4. ... Applications will be able to exchange data.
http://www.virtualserialport.com/download/vspdxp.exe - 1Mb - Download - Screenshot

Virtual Serial Ports Driver XP
Virtual Serial Ports Driver (VSPD) creates two pure virtual serial ports in your system which are virtually connected to each other. For other Windows applications, virtual ports will be seen exactly as two real serial ports connected via null-modem cable. ... Of course, you can transfer files, other data or do whatever you want as it was real serial ports. ... With VSPD you can connect one application to another using virtual serial ports pair. ... This solution can be used, for example, for GPS simulation programs.
http://www.eltima.com/download/vspdxp.exe - 1Mb - Download - Screenshot

Virtual Serial Ports Driver
Virtual Serial Port Driver by Virtual Serial Port Software, department of Eltima, is a sophisticated software solution aimed to create two pure virtual serial ports virtually connected to each other in your system. Therefore, without additional hardware installation you may use extra serial... Unlike standard physical serial ports, virtual ports can be assigned any number and you can create as many virtual serial port pairs in your system as you want. ... User friendly interface makes it very easy to configure and use virtual serial ports pairs.
http://www.virtualserialport.com/download/vspdxp.exe - 2Mb - Download - Screenshot