Port Radar

什麼是 Port Radar？

Port Radar is a native macOS development utility for inspecting local listening ports and the processes behind them. It is designed to answer a simple but common question on developer machines: what is running on this Mac, and should it still be running?

The app surfaces listening services in the menu bar and lets you inspect each process by port, command, project context, PID, and uptime. It then uses Apple Intelligence on-device to explain what a process appears to be, why it is running, and whether it is safe to stop. The site also highlights a sharing workflow for local apps: from the port menu, Port Radar can create a Cloudflare Tunnel and generate a public URL for a localhost server.

Port Radar 能做什麼？

Scan listening ports

Shows localhost services such as Vite, Next, Python, Docker-related processes, and orphaned processes grouped by project so you can see what is actively listening on your Mac.

Process context for each port

Displays details like command, project name, PID, and elapsed runtime to help you identify which local app owns a port before taking action.

Apple Intelligence explanations

Lets you ask about a selected process in plain language and receive an on-device explanation of what it is, why it is present, and whether it can be stopped.

Cloudflare Tunnel sharing

Can create a public preview URL for a local app using Cloudflare quick tunnels, with one-button sharing and the ability to stop the tunnel anytime.

Menu bar workflow

Presents the main controls in the menu bar for quick access to scans, sharing, and process management without needing a separate terminal workflow.

Stop or force quit processes

Includes controls to stop a process cleanly or force quit it with confirmation, reducing the need to hunt down PIDs manually.

使用情境

“Debugging local development environments”

Useful when multiple dev servers are running and you need to identify which port belongs to which project before restarting or stopping anything.

“Checking unfamiliar background processes”

Helps when a process has been running for hours and you want a plain-language explanation of what started it and whether it is safe to quit.

“Sharing a local preview with others”

Lets you expose a localhost app through a Cloudflare Tunnel so you can send a public URL to a teammate or client without a separate CLI setup.

“Cleaning up stale or orphaned ports”

Provides a way to find forgotten servers, orphaned processes, or leftover listeners that keep ports occupied after a project changes state.

“Managing a Mac from the menu bar”

Fits developers who want a lightweight, always-available way to inspect local services and act on them without switching contexts.

常見問題

What does Port Radar do?

It finds listening ports on your Mac, shows the associated process context, and can explain selected processes with Apple Intelligence.

Does Port Radar send process data to the cloud?

The site says the Apple Intelligence workflow is on-device and private, with nothing leaving your Mac.

Can I share a local app with someone outside my network?

Yes. The site says Port Radar can create a Cloudflare Tunnel and give you a public URL for a localhost server.

Which Macs are supported?

The site lists macOS 14+ support and says it works on both Apple Silicon and Intel Macs.

Is Port Radar open source?

Yes. The site states that it is open source under Apache 2.0 and links to GitHub.