Harbor v1.0.0

EADDRINUSE :3000 — never again

Every dev server on your Mac. One keystroke away.

Harbor sits in your menu bar and shows every localhost listener: the framework behind it, live CPU, memory, uptime, and energy impact — with one-keystroke kill, open-in-browser, and jump-to-terminal when a port needs attention.

Download Harbor.dmg Harbor.dmg.sha256

Free · macOS 14+ · Universal · Developer ID signed & notarized · No telemetry

Harbor's menu-bar panel: dev servers grouped by project with framework badges, ports, live vitals, exposed indicators, and a Kill All action

What it does

Built for the local dev loop.

:3000:5173:8000:5432

Every listening port

IPv4 and IPv6, grouped by project, refreshed live. An exposed badge flags anything bound beyond loopback — the difference between a dev server and an accidental network service.

Next.jsViteRailsFlask

Framework detection

The process behind each port, named: Next.js, Vite, Rails, Django, Express, FastAPI, Phoenix, and more. System daemons get honest names too — AirPlay is AirPlay, not a mystery.

0.4% CPU184 MB4h 12m

Live vitals

Uptime, CPU, memory, and an energy badge per server, with rolling bar sparklines in the detail inspector — so the noisy one stands out before your fans do.

⏎ Kill⌘⇧K Kill All⌥⏎ Terminal

One-keystroke actions

Kill safely (SIGTERM first, PID-reuse protected), Kill All with an enumerated confirmation, multi-select batch kill, open in browser, or jump straight to the owning terminal.

See it move

Sixty seconds of Harbor.

Deep visibility

A port number alone answers nothing.

Every row expands into an inspector: full command line, working directory, owning app, bind scope, health check, and CPU/memory history drawn as zero-anchored bars — idle looks idle.

Docker and Kubernetes port-forwards are labeled with their real origin. Tunnels — ngrok, cloudflared, ssh -R — show their public endpoint. An opt-in view surfaces UDP and stuck non-LISTEN sockets for the “port is taken but nothing is listening” days.

Terminal person? harbor-cli ships alongside: list · kill · watch · open, with stable JSON output.

Harbor's detail inspector in dark mode: command line, working directory, bind scope, health check, and CPU/memory bar sparklines

Install

Thirty seconds to a quieter localhost.

  1. Download Harbor.dmg — free.
  2. Drag Harbor to Applications.
  3. Hit ⌘⌥P. That’s it.

Updates arrive in-app via Sparkle, signed with EdDSA.

Verify your download

curl -LO https://github.com/ftchvs/harbor/releases/latest/download/Harbor.dmg.sha256
shasum -a 256 -c Harbor.dmg.sha256

No telemetry. Harbor never sends process, port, project, or command data anywhere. Inspection happens on your Mac.

Non-sandboxed for a reason. Harbor inspects and signals your own local processes — the App Sandbox forbids that, so it ships here as a Developer ID-signed, notarized DMG instead of on the App Store.