Serial Port Monitor ActiveX Control enables monitoring of any serial port on a system within an application. It tracks serial port activity, including data transmission and reception and all applications utilizing the port.

The software's ActiveX Control provides a wide range of events, properties, and methods to control the monitoring process. Developers are able to check the state of the serial port, process all signal line events to notify about the changes in state, and manage control functions such as Handflow, Baudrate, and Timeouts.
Moreover, Serial Port Monitor ActiveX offers low-level access to the serial port via standard IRP major functions and IOCTL requests, providing users with even more control. This software component directly intercepts data flow passing through the serial port being sniffed, making it more usable and robust.
Serial Port Monitor ActiveX Control lets developers sniff and detect all serial port activity in the system, determine all applications that work with serial port, and even control the serial port directly from within their own application. This means that developers can open/close serial ports without being detected or triggering any system alerts.
The software also offers a unique OnOpenClose event that detects the application name and determines whether the serial port is opened or not. Sniffing can be started and stopped even if the serial port was previously opened by another application.
Serial Port Monitor ActiveX is compatible with MS Windows 2000, XP, 2003, and all 64-bit OS, as well as MS Visual Basic 5-7, MS Visual C++ 5-7, Inprise/Borland Delphi 3-7, Inprise/Borland C++ Builder 3-6 and .NET technology. Additionally, this software component can be easily extended with custom functionality, providing new creative opportunities to serial port application development.
In conclusion, Serial Port Monitor ActiveX is an essential tool for developers who need to monitor serial ports and ensure their software is functioning correctly. Its unique features and compatibility with various programming languages make it a versatile and valuable asset for any development project. License type offered is OEM.
Version 3.0:
Greatly improved stability and speed of ActiveX component
Extended and enhanced Serial Port Monitor driver