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Purchase
Serial Port Monitor

The professional tool for capturing, displaying, and analyzing serial port data in real time. Trusted by engineers and developers worldwide.
  • Full-feature access — everything unlocked, no restrictions
  • 12 months subscription with free updates — always compatible, always current
  • Lifetime license available — own it outright, no recurring fees
  • Analyze any type of serially connected hardware or software
  • Simultaneous monitoring of an unlimited number of COM ports
  • Logging of data received and sent from a monitored COM port
  • Monitoring COM ports of different types (RS232/RS422/RS485)
Lifetime Best offer
$99 $139
Pay once, use forever with all future upgrades.
Annual subscription
$59 per year
Cancel anytime.
Buy Now
Taxes may apply by location Secured by Paddle
  • Includes all Standard plan features
  • Sniffing RS232 ports already used by another application
  • Exchanging data with any serial port via Advanced Send Dialog
  • Changing the parameters of a serial port on-the-fly
Lifetime Best offer
$179 $239
Pay once, use forever with all future upgrades.
Annual subscription
$99 per year
Cancel anytime.
Buy Now
Taxes may apply by location Secured by Paddle
company license
Built for Development Teams
One license covers 10 workstations with full PRO features enabled — ideal for large development groups.
Request a quote
  • 300K+

    registered users

  • 20+

    years on the market

  • 186+

    countries worldwide

  • 4.8
    based on 345 reviews
Our customer reviews
4.8 based on 345 reviews
Michael Hebenstreit
SourceForge review
SourceForge
I was already thinking about writing a minimal terminal software with this capability, but then I found Serial Port Monitor works without hassle. I know since X64 Windows this has become difficult - even Microsoft does not support their old Portman software anymore. So count me impressed!
Yusuf C.
SourceForge review
SourceForge
We teach electronic communication courses to our students. Children love this practice and enjoy the lesson. Thanks to the Serial Port Monitor from the Electronic Team, our lessons became more fun.
Paul H.
Capterra review
SourceForge
SPM allowed me to rapidly (within a couple of days) develop and test that driver, which would have taken me 2-3x longer if I'd had to debug the code by hand. SPM has a slick, modern UI and so far has been completely reliable. It just does its thing and works. It's made my development more efficient and allowed me to capture and replay data to simplify testing.
Renan Corrêa de Moura
TrustRadius review
trustRadius
Serial Port Monitor is the best software for monitoring Serial 232 and others. I used it for reading communication with a smart meter. The differential of Eltima is the capacity for sending messages in hex, oct... or any other format.
Corporate offers and OEM

Serial Port Monitor Integration

Whether you're looking at embedded Serial Port Monitor solution as a part of your product you can consider Serial Port Monitor ActiveX as a component for implementation.
Find out more about SPM AX  

  • Get 50% OFF

    Owners of a previous version of this product get 50% discount to upgrade to the latest one.

  • Find a local reseller

    We also distribute our solution through global network of resellers and value added partners. Find out more

Frequently Asked Questions

We accept PayPal and credit cards as payment methods. If you prefer to pay via bank transfer, please reach out to our sales team at sales@electronic.us for further assistance.

To cancel your Serial Port Monitor subscription, follow these steps:

  1. Open the order confirmation email.
  2. Scroll to the bottom of the email and click the "review your subscription" link.
  3. The subscription management page will open. Locate and click the "Cancel Subscription" option.
  4. Alternatively, you can contact our support team directly and request cancellation assistance.
After making a purchase, the invoice will be automatically sent to the email address provided in your account. If you need a copy of the invoice or encounter any issues with receiving it, you can contact our support team for further assistance.