Free your ports.Keep your flow.

See the process behind every port. Get back to the code that matters.

Download free View source

macOS · Windows / Free & open source

EADDRINUSE

:3000

PORT IN USE

A demo only. No access to local processes.

Your projects. In plain sight.

Local ports, organized by project. Processes, origins, and risks at a glance.

Port Guardian project workspace showing grouped ports, process origins, risk levels, and inline details. — Chinese interface preview with sample data. The app shows your local services and supports English.

Trace the source

From port to process to the IDE or terminal that started it. Know what it is, and where it came from.

Organize by project

Group by working directory and search TCP / UDP ports. Keep parallel projects in order.

Review. Then stop.

Check process identity and risk before stopping it. System services are protected; graceful or forced termination is your choice.

Next time, keep coding.

One focused little tool. More room for your flow.

Download for macOSApple Silicon & Intel · DMG Download for Windows64-bit · EXE

Current version v0.2.14View releases on GitHub

First-time installation

The current macOS build is not Apple Developer ID signed or notarized. Windows may also display a SmartScreen notice.

macOS: Drag the app to Applications. If the first launch is blocked, go to System Settings → Privacy & Security, verify the source, and select Open Anyway.

Windows: If SmartScreen appears, verify that the installer came from this project’s GitHub Releases, then select More info → Run anyway.

Read the full installation guide