Skip to content
WasyTech
AvailableOpen SourceMIT

Serial Port Monitor

Debug hardware serial ports in your browser.

Ditch heavy desktop terminal emulators like PuTTY or Tera Term. Serial Port Monitor uses the native Web Serial API to connect to Arduinos, ESP32s, and other USB/RS-232 devices directly from your browser. Read telemetry and send commands with zero installation and absolute privacy.

  • Web
Open SourceLocal processingNo account

Downloads for this utility are being prepared.

Core features

Included in the free core utility.

  • Connect directly to local USB and serial devices
  • Customizable baud rates, data bits, and parity
  • Send and receive text payloads in real-time
  • Zero installation or companion apps required

Privacy & data handling

This utility processes data locally on your device wherever technically possible.

Processing
Local, on your device
Account
Not required
Internet
Works offline
Telemetry
No telemetry

Details

Category
Developer Tools
Platforms
Web
License
MIT

Frequently asked questions

What does Serial Monitor do?

Ditch heavy desktop terminal emulators like PuTTY or Tera Term. Serial Port Monitor uses the native Web Serial API to connect to Arduinos, ESP32s, and other USB/RS-232 devices directly from your browser. Read telemetry and send commands with zero installation and absolute privacy.

Is Serial Monitor free?

Yes. Serial Monitor is free to use.

Is Serial Monitor open source?

Yes. Serial Monitor is open source under the MIT license.

Does Serial Monitor require an account?

No. Serial Monitor does not require an account.

Does Serial Monitor send my data anywhere?

Serial Monitor has no telemetry. Processing happens locally on your device.

Related utilities