Serial Debug Platform

Serial Port Utility

A precise workspace for serial capture, protocol inspection, Modbus and custom protocol frames, and Live Sync remote access across development, test benches and field service.

Windows 6.6.8 macOS 6.6.8

Serial Port Utility desktop workspace

Real interface from Serial Port Utility.

Multi-Port Capture several serial links in one shared timeline. Live capture and status tracking
Any Baud Rate Pick a standard speed or type any custom baud rate your device needs. The rate is limited only by your hardware, never by the software. Standard presets and custom baud rates
Live Sync Share a port four ways: RFC 2217, Live Console, Live Relay and Live Share. RFC 2217 on your LAN or VPN, the other three through the cloud
Core Capabilities

Built for the work between first signal and final delivery.

Keep the physical port, byte stream, protocol frame and service record close together so debugging stays traceable.

Connect and capture

Open the port, watch traffic immediately and keep send and receive events in a readable order.

Inspect protocol frames

Switch between text and byte-level views for command protocols, binary payloads and CRC checks.

Reach a port you are not sitting at

Serve the port over RFC 2217 on your own network, watch it from a browser, open it as a real port on another machine, or hand a colleague a time-limited invite code.

One account for every machine

Your account keeps your licenses, orders, devices and synced settings in one place.

Version Activity

Current desktop releases, with dates you can verify.

See what is current before downloading, then review checksums and change notes on the downloads page.

Windows

Windows 6.6.8

Released on

macOS

macOS 6.6.8

Released on

Workflow

A compact path for repeatable diagnostics.

01

Connect

Match port parameters and start from a known link state.

02

Capture

Record the interaction timeline with clear timestamps.

03

Inspect

Check protocol format, payload content and timing behavior.

04

Deliver

Move findings into service, license or remote support workflows.

Use Cases

For embedded labs, industrial sites and remote maintenance teams.

The same interface can cover early board bring-up, PLC communication checks, serial-to-network gateway validation and post-delivery support.

  • Compare traffic across multiple ports during master-slave testing.
  • Review long capture sessions with wrapping, timestamps and stable display modes.
  • Track device records and licenses when debugging continues after deployment.
Modbus request builder in Serial Port Utility

Real interface from Serial Port Utility.

Embedded development Industrial control Gateway diagnostics
Licenses and Pricing

Choose the activation and purchasing workflow that fits your use case.

Prices below show WeChat Pay in CNY and PayPal in USD. Final checkout uses the selected payment channel.

Free covers basic debugging. Both Personal and Enterprise unlock the same Pro tools; choose the purchasing and activation arrangement that fits you.

Personal

For individual purchasers

  • Online order and email delivery
  • Standard license activation
  • Personal billing details
1 Month¥1.90$0.29
1 Year¥19.90$2.90
3 Years¥39.90$4.90
Lifetime¥59.90$9.90
Start Now

Install the latest build and move directly into serial diagnostics.

Download the desktop tool first, then add service and Live Sync workflows when your device process needs them.