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Serial Port Monitoring Software
Send and analyze COM port data

Serial Port Monitor displays, logs, and analyzes all serial data exchange between serial devices and applications.Install Serial Port Monitor and track all data flows from any software or hardware that works with a serial port. In other words, Serial Port Monitor is a powerful system utility for monitoring the usage of serial ports, exploring OS functioning, tracking down problems in system or application configurations and processes.

Common objectives and our solutions

View and filter monitored data

Serial Port Monitor lets you choose monitoring filters, thus saving your time and letting you track only the events you are interested in. It can process all standard serial I/O Control requests and other major functions including IRP. Both (IOCTLs and IRPs) can be filtered in Serial Port Monitor. Serial Port Monitor offers several views for more comfortable monitoring process: table, line, dump, or terminal.

Monitor several COM ports

Serial Port Monitor enables you to monitor several ports at the same time. You can gather information on how apps interact with several ports and devices during a single session. To simplify analysis, the data is recorded in a single log as it is received and sent, on a first-come-first-out basis.

Monitor and analyze Serial Port activity

Serial Port Monitor tracks, displays, logs, and analyzes all serial port activity in a system. Serial Port Monitor is attached to a COM port, opened by any application or hardware. All the data that goes through the monitored serial port will be displayed in this monitoring tool.

Emulate data sending to serial device

You can send any data in strings as well as in other different numeration systems (binary, octal, decimal, and hexadecimal) to monitored serial port as if it was sent on behalf of monitored application using terminal mode feature of Serial Port Monitor. This way you can follow the reaction of the monitored serial device on some special commands. Specify sending data format and begin monitoring serial port activity. Port Monitor lets you change input data stream parameters and easily modify COM port settings (stopbits, flow control, parity control, data bits, highlighting, etc.).

Compare STANDARD and PRO/Company versions

# Feature Standard Pro/Company
1 Monitoring serial ports which are already in use
2 Sending/receiving data to/from any COM port (Advanced Send Dialog)
3 The possibility to change COM port parameters from Advanced Send Dialog
4 Any serial port software/hardware can be analyzed
5 Monitor any number of serial ports at once
6 Supports all COM-port types
7 Intercepts all data read from/written to COM port
8 Built-in search
9 4 types of customizable monitoring visualizers for viewing and logging data
10 Incoming and outgoing data streams logging
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Serial Port Monitor full features list

Start/stop monitoring the serial port that is already opened by another application (available in Professional/Company Edition only)
Completely compatible with Windows 10 (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
Possibility to add several ports for monitoring in one session
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/Company Edition only)
Real-time data capturing
Various monitoring visualizers: table view, line view, dump view, terminal view

Let's get started

Serial Port Monitor
Demo version limitations
• fully functional 14-day trial
System Requirements
Windows (32-bit and 64-bit): XP/2003/2008/Vista/7/8/10, Windows Server 2012, Windows Server 2012/2016/2019
Latest Update
Version 8.0.410 (10 Jun, 2021) Release notes