To monitor (bi-directional) Serial communication RS-232 between two devices without physical cable, use Bill Serial Monitor. This software allows you to view, log, test and analyse the activity of the serial RS-232 port. To monitor the serial protocol of two different serial devices. DSR, CTS, DTR and RTS can also be controlled
No programming or additional hardware required !

Creates virtual COM ports directly from your own programs and fully control them! Virtual ports look like real hardware serial ports for all serial communications applications. On the other hand, developer API allows your program to access data written to virtual serial port by communications application and to respond with your own data. OEM license allows you to distribute this ActiveX control as a part of your software.

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. All kind of PnP serial devices as well as virtual devices are also supported.

To monitor (bi-directional) Serial communication RS-232 between two devices without physical cable, you can use the freeware Bill Serial Monitor. This freeware enable you to view, log, test and analyse the activity of the serial RS-232 port. If you want to monitor the serial protocol of two different serial devices you can use our Protocol Analyser function. DSR, CTS, DTR and RTS can also be controlled

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 like real serial ports for other Windows CE applications. VSP ActiveX Control CE features unique set of algorithms for system and port events notification.

Create and manage virtual serial ports from .NET and Visual Basic (ActiveX)
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 serial port.
Windows Mobile/Pocket PC, Windows XP/2k/NT and Windows ME/98.
Samples in C#, VB.NET and VB6

Serial Port AX Control is a powerful ActiveX component that lets developers quickly and effectively organize work with serial ports. Serial Port AX Control makes communicating with external devices on rs232 connection really fast and reliable. Serial Port AX Control offers control of such devices as modems, bar code readers, navigational devices and others through a serial port. Includes examples for Microsoft VC++ and Microsoft Visual Basic.

Virtual Serial Port ActiveX allows your application to create additional virtual serial port in system and fully control it. Created virtual port looks absolutely like a real one for Windows applications. You can view parameters information of a virtual port, set by other application, view and control from your application data sent to virtual port by other applications and respond to them by sending your own serial data to virtual COM port.

Virtual Serial Port ActiveX Control is a powerful tool for professional developers that allows your application to create custom additional virtual serial port in system and fully control it. Created virtual serial port looks like real serial port for other Windows applications. From your application you can control data sent to virtual serial port by other applications and respond to them by sending own data to virtual serial port.

Serial Port ActiveX Control is a powerful component that lets developers quickly and effectively work with serial port. Use Serial Port component to easily communicate with external devices on RS232 connection, such as modems, bar code readers, PBX and so on. Serial Port introduces several extremely useful properties for detailed setting of serial port, numerous methods to write and read from port and events to control serial port state changes.

Serial Port Sniffer is a powerful advanced ActiveX Control that allows your application to sniff (fully monitor and edit data flows) serial port in your system. Serial Port Sniffer ActiveX Control detects all serial port activity in your system, all applications that work with serial port and all the data that is being sent and received can be easily monitored with Serial Port Sniffer ActiveX Control within your own application.