Serial Port Monitor v4.1 Build 4.1.2.293

Serial Port Monitor is a professional and powerful system utility for RS232/422/485 COM ports monitoring. The program monitors, displays, logs and analyzes all serial port activity in a system. This is an ideal way to track down problems that may occur during application or driver development, testing and optimization of serial devices, etc.

Serial Port Monitor also offers advanced filtering and search, professional built-in terminal and data exporting options, user-friendly and flexible interface among its key advantages. It is a completely software solution, you don't need any additional hardware to use it.

Full features list:

Start/stop monitoring the serial port that is already opened by another application (available in Professional Edition only)
Serial Port Monitor is completely compatible with Windows 7 /Vista (both x32 and x 64)
Serial Port Monitor and all of its internal drivers are digitally signed
Any number of serial ports can be monitored simultaneously
Supports all COM-port types: standard on-board ports, extension board ports, software-based virtual COM ports, bluetooth serial ports, USB to SERIAL cradles, etc
Data transmission monitoring and logging
Advanced send dialog: easily send various types of data, apply aliases for faster typing and automation, send files and loop functions and commands, change serial port parameters on-the-fly (available in Professional Edition only)
Real-time data capturing
Various monitoring visualizers: table view, line view, dump view, terminal view
Incoming and outgoing data streams logging
Multi-colored commands display in table view
Any software/hardware that works with a serial port can be monitored
Intercept and record all serial input/output control codes (IOCTLs), tracking their full details and parameters
Customizable monitoring session logging (several timestamp formats, different scale of notation, customizable logging string length etc.)
Convenient and flexible monitoring session's management: saving and loading all monitored data, exporting and redirecting to file functions
Monitoring session exporting (HTML, ASCII text, UNICODE text, Exсel CSV) and automatic redirection to file (Serial Port Monitor will automatically append all monitored data to a file in real-time)
Supports copying all recorded data to clipboard
Supports adding data automatically before and after packet to be transmitted
Full duplex mode supported
Control lines status visualized
Unique stream filtering tools with presets
All baudrates supported
Flexible configuration: stopbits, flow control, parity control, data bits, highlighting, etc.
User-friendly flexible interface: the software is designed to provide easy access to serial ports, no programming skills are required

Home Page: http://www.eltima.com/products/serial-port-monitor/