Ultra Serial Port Monitor for Windows

Name: Ultra Serial Port Monitor
Rating: 3 (7 reviews)
Author: skybn

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Editors’ Review

Download.com staffFebruary 26, 2026

This utility provides comprehensive monitoring, display, and analysis of all serial port activity. It's designed for software and hardware developers working with RS232, 422, and 485 COM ports.

Pros
- Monitors RS232, 422, and 485 COM ports
- Displays and analyzes all serial port activity
- Receives, displays, records, and analyzes exchanged data
- Allows sending data to serial devices for control
- Facilitates application and hardware development
Cons
No Cons available

Ultra Serial Port Monitor for Windows

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Used Ultra Serial Port Monitor for Windows?

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Full Specifications

GENERAL

Release: March 30, 2017

Latest update: February 26, 2026

Version: 5.0

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows 10
Windows Server
Windows ME
Windows 7
Windows 2000
Windows XP
Windows 2003
Windows NT
Windows Vista
Windows 98
Windows 8

Additional Requirements: None

POPULARITY

Total Downloads: 33,089

Downloads Last Week: 6

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Last Updated

User Reviews

3/5

7 User Votes

Does not "monitor", don't waste your time
pete_lSeptember 10, 2017
Pros
Free, small
Cons
Doesn't do what it says it would
Summary
This claims to be a serial port monitor. But it doesn't monitor - i.e. report the traffic going in and out of a serial port. All it does is what putty or a terminal program does, lets you type stuff that is then _sent_ to a serial port and displays stuff that is received,
Fancy hyperterm, not a monitor or sniffer
Rob NeffJune 5, 2015
Pros
Send and receive data as hex or ASCII
Cons
Apparently cannot passively monitor outgoing data from another application, as I thought a "monitor" would do.
Summary
This takes control of the serial port and handles all sends and receives. You can't run another application on the PC that is sending/receiving data on that port at the same time. Once you understand that limitation, it looks like it does what it's supposed to.
Good Work!
BenjaminmnOctober 2, 2013
Pros
Easy to use features meet my need
Cons
found nothing
Summary
Well done Thanks
Does not work!
ShortiiiiJune 7, 2013
Pros
None at all.
Cons
Did not work on W7 64b. Cant close the application without end tasking it through task manager.
Summary
Just rubbish floatware!
The software can work on my windows7
albertfieldApril 3, 2013
Pros
Software interface looks nice, Easy to use, meet my needs
Cons
Not found it
Summary
meet my needs,very good Updated on Apr 3, 2013My windows is also windows7, and the software work well, does your computer have a serial port?
works great
bob dillonNovember 21, 2012
Pros
Easy to use and does what it says it does
Cons
Hard to think of anything.
Summary
Good - use it.
Doesn't work on Windows 7
JA_slimOctober 31, 2012
Pros
looks nice?
Cons
Doesn't work on Windows 7. Can't get it to receive any data. Can't tell if it sends anything. Doesn't even close properly. Try to close the software and get error. Have to kill with task manager.
Summary

Developer’s Description

By skybn

Monitor, display, analyze all serial port activity in a system.

Ultra Serial Port Monitor is a professional and powerful system utility for RS232/422/485 COM ports monitoring. The program monitors, displays, analyzes all serial port activity in a system. It is a very valuable tool for all software and hardware developers working with serial ports. Its powerful features and operation of friendly, could well improve your working efficiency, saving your time.

Ultra Serial Port Monitor allows you to receive, display, record and analyze all data exchanged between the serial device. And in a variety of ways to send data to the serial device to achieve control of the equipment. It can be successfully used in application development, device driver or serial hardware development and offers a powerful platform for effective coding, testing and optimization.

Ultra Serial Port Monitor is developed by professional engineers who are in the area of serial port communications. They have deep knowledge of serial communication, and a wealth of practical experience.This products will be able to best meet your needs.

Ultra Serial Port Monitor for Windows

Editors’ Review

Pros

Cons

Ultra Serial Port Monitor for Windows

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User Reviews

Does not "monitor", don't waste your time

Fancy hyperterm, not a monitor or sniffer

Good Work!

Does not work!

The software can work on my windows7

works great

Doesn't work on Windows 7

Developer’s Description