Advanced Serial Port Monitor 4.4
9.1 MB

Advanced Serial Port Monitor 4.4

Monitor the transferring of data via COM ports
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Latest version:
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Awards (13)
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Software Informer Editor Rating 4 Software Informer Virus Free award
9.1 MB

Keep track of different COM ports, including, but not limited to RS232, RS485, and RS422. Establish various types of connections, select from three available operation modes, including Spy and RS232 Terminal, and view the transferred data in HEX, ASCII, and binary formats.

As you can tell from its name, Advanced Serial Port Monitor allows monitoring COM ports of various types, may they be the ubiquitous RS232 or the lesser used RS485 and RS422 serial interfaces.
Though it has a rather simple and intuitive interface, the main functionality of this application recommends it to advanced users such as professional automation specialists. It also provides many advanced features and functions that make this application more suitable for the intricate serial port monitoring tasks than for the simpler ones.

I think that one of the most important advantages of this application is the fact it supports different types of connections, being able to monitor not only the data transfer between a serial port and a Windows application, but also the data transfer between serial devices. This is possible because it supports 3 different operation modes, including a “spy” (“sniffer”) mode that allows monitoring the data exchange between two external devices which are connected with a cable. Full duplex mode is also supported, allowing the simultaneous bidirectional transfer from and to the computer.

Furthermore, the fact that the received data can be quickly outputted to a file is also a nice feature in my opinion. Besides the powerful logging capabilities, the large number of parameters that can be configured by the users, such as the baudrates or the parity types, is also a praiseworthy aspect of this program.

In an end note, Advanced Serial Port Monitor is one of those few programs that leave no room for complaint. It is not created to falsely impress with fake advantages, but to solve some precise needs, serial port monitoring related needs, and that’s exactly what it does.

RS Senior editor
Rory Shaffer
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Review summary


  • Can also monitor the data exchange between two external devices
  • Full duplex mode
  • Neat and comfortable interface


  • Only 6 plugins are available for being downloaded and embedded into the application

Comments (2)

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rating Wayne Canfield
Allows you to monitor bidirectional communications between your PC and a remote device. Can be open in multiple windows to monitor multiple ports at the same time. You can monitor between two external devices but you’re going to have to make the cables. Between the PC it’s installed on and a peripheral there is no additional hardware required. Can capture in ASCII or hex. GUI is a little dated but who cares. Currently running on Windows 11 just fine.

Feb 27, 2023 Was it helpful?  yes(0) no(0) | Reply
Best way to send receive, spy on the connection. Tried out many app but this is handy with all the functionalities in one place!

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