Serial Monitor Reviews

Vlad Mazilu
I develop a software to read data from electric energy meters. The meters use the standard ANSI C12.21 and your software helps me follow how the PC communicates via serial interface (direct RS485 or via GSM modem) with the energy meters.
Your software is very useful to confront the theory (documentation of the standard) with the real communication process. It helps me to track errors and, most usefully, it has very precise packet time stamps.
Vlad Mazilu Automation Engineer
Robert Carter
Been a Sermon user since the early days, and have found it to be a very useful tool. I recommend Sermon to other engineers/techs whenever I get the chance.
Robert Carter Steelwater Solutions Corporation
Sandro Calligaro
I tried many serial sniffers or the like, and yours is the only one I found really working on a Win7 machine.
Sandro Calligaro
Ralph Silvio
Customizable and easy to use tool.
Ralph Silvio Student, University of Wuppertal
06/20/2020
Matt Sykes
Since MSFT has completely screwed up Portmon I was struggling to find a light and simple port monitor, then I found your site. Excellent product, exactly what I need. You have my deep gratitude.
Matt Sykes
Walter Conley

I cannot express how impressed I am with you and your company that you would make this change for me and so quickly!!!

Thank you very much, you're commitment to customer support if very apparent and appreciated.

Walter Conley Crown Equipment Corporation
Juergen Simet
Thanks a lot for the quick and perfect support! SerMon works!
Juergen Simet Continental Automotive GmbH
Bruce Zeelie
Just wanted to tell you what an awesome job you have done on the software. I think its absolutely first class!
Bruce Zeelie
Henrik Iversen
Perfect for analysing data on the COM ports! I love it!
Henrik Iversen
Oleg Karpenko
Great product! I had bunch of my own software to do the same job, but nothing close to what you did. Now serial protocol debugging is 400% easier.
Oleg Karpenko
Bob Carter
Thanks for your input and also your great product. Serial Monitor has done me very well over the years and still recommend it to other colleagues who are using serial ports.
Bob Carter
Brad Hein
Thank you for your quick response. The serial monitor is a very nice tool. Keep up the good work.
Brad Hein
Terje Nilsen
I bought the Serial Monitor – works great and helped me solve the communications issues I had – great stuff!
Terje Nilsen
Don Whitbeck
I am using it to monitor serial traffic to and from a programmable logic controller. Sermon looks like a very useful device for reverse engineering protocols.
Don Whitbeck
Bill Spurgeon
Excellent software, Up to speed and operating quickly, Choice of displays and outputs.
Bill Spurgeon
Bill Rankin
I use your Serial Monitor all the time. I find it one of the only programs that you simply load and !Bam! it runs – all the time – every time. Good Work!
Bill Rankin
Peter
I must say you serial port software is really cool.
Peter
Matt Watts
Looks sharp and does what it says and more. It's not confusing like other applications of this type. Nice work! Keep it up!
Matt Watts
Michael Peoples
Thanks for the prompt reply and the great software. You guys really made a useful product. Worth every penny!
Michael Peoples AT&T - CMOPM
Bob Lewis
It is the best serial analyzer tool I have seen so far today (third tool I have tried).
Bob Lewis
Mike Pulice
Thank you. Your tools are really awesome too I recommend them to every company I go to or do work for. Keep up the good work!!
Mike Pulice
Roy J. Gromlich
I have been evaluating your Serial Port Monitor for about one week now, and find it the best product of its kind that I have tried. I am also looking at the USB monitor program and the network monitor.
Roy J. Gromlich Senior Engineer
Brad
Recently I purchased your serial monitor product - good job! It has proven to be a necessary tool for the work that I do.
Brad
Noel Ingle
The Serial Monitor is a great tool.
Noel Ingle
Belma Johnson
One of our other Test Engineers, Huy Nguyen purchased 1 license and has been pleased with the performance as well as the rapid customer support.
Belma Johnson
Paul Sweezie
Thanks for the quick response, I do not get help that quickly from other software companies. The upgrade went smoothly and seems to have solved my problem.
Paul Sweezie
Dale O'Harra
Thank you. Your program is a LIFESAVER, Excellent job! It's been running beautifully and really helps in the debug of two multithreaded programs communicating over RS232.
Dale O'Harra
Victor Wong
Of all the software we have investigated, yours has risen to the top of our preferred list of development tools.
Victor Wong
Quentin Liedtke
Simply, it's the best serial port monitor programme available. Our company has four copies of HHD Serial Monitor and we all love it!!
Quentin Liedtke Software Designer
Lawrence MacNeil
Nice product, it is about time someone came up with something like this.
Lawrence MacNeil Industrial Control & SCADA Software Engineering
Leo Imhof
It's the best Tool for RS232 ... Is very Fast. Is logic to handle. The Price is very OK. The very - super Support of the Autor of this Prg. SUPER Product Gratulation!
Leo Imhof IT Support of Hospitals and Bank's
Robert
Thank you very much that worked well. Thanks for looking into this on a Sunday. BTW the new software looks great.
Robert
Plinio Guimaraes
Evaluated the "Serial Port monitor" (shareware version) and I liked very much. It was very useful for me.
Plinio Guimaraes
Chuck Johnsen
As I mentioned before, we tried your product for a while and liked it very much. Thanks again for all the help. I hope it isn't too late where ever you are in the world!
Chuck Johnsen
Jef Housein
Thanks for all your help, you have a great product AND excellent service.
Jef Housein
John Andrews
Your "serial port monitor" utility is AWESOME! I've place my order, (and have the eval demo running), it has saved me the cost of the purchase in less than a day of use. I'll gladly be providing an testimonial. I'm in the process control field in manufacturing industry. I'm impressed and delighted to have found your web site.
John Andrews
Jim Ehramjian
We really like version 4.07 on more contemporary platforms. As we do a lot instrumentation interfacing via RS232 (and like-standards), its a superb development and debugging tool for us.
We're grateful for the fine products!
Jim Ehramjian Project Manager. Biospherical Instrumetns Inc.
Dave Bushong
I really like your marketing model, and from what I can tell, your software is one of those rare classes that I would call "bulletproof". I'd also call it "lean", "effective" and great!
Dave Bushong