v0.1.1 · macOS 14+

Your dev ports, berthed in the menu bar.

Berth watches the ports your projects actually use — and lets you release them in one click. Native, fast, and quietly reliable.

Download for macOSView source

Notarized by Apple · Signed updates · No telemetry · Apache-2.0

Berth app panel in light mode showing watched ports, project processes, and settings
The whole app. That's the point.

Small tool. Does the job.

Everything in one compact panel — no windows, no daemons, no dashboard to keep open.

Berths for your ports
Pin the ports you use every day. A green dot means free, amber means taken — check at a glance, no commands required.
Projects, not PIDs
Berth groups ports by project and shows the real process, PID, and path behind each one, so you always know what you're stopping.
Release with confidence
One click to stop a process — with a clear confirmation first. Force-kill is there, but only when you explicitly ask for it.
Search like a terminal
Jump straight to a port, open its localhost URL, or type “release 3000” — right from the panel's search field.

Boring, on purpose.

A tool that can stop processes should earn your trust before it does anything clever. Berth keeps the surface small and the receipts public.

Read the source

Signed and notarized

Every build is signed with a Developer ID certificate and scanned by Apple's notary service. The ticket is stapled to the app.

Updates you can verify

Updates are served over HTTPS and checked with EdDSA signatures by Sparkle before anything touches your Mac — then they install only when you click.

No telemetry, no accounts

Berth makes no network calls of its own. It reads your local ports and that is all. No analytics, no crash reporting, no sign-in.

Open source, Apache-2.0

The full source is on GitHub, including the release pipeline that signs, notarizes, and publishes every version.

Changelog

0.1.1Latest · security & performance
  • Memory-growth fix in the CPU usage cache; smoother long sessions
  • Extra guard against stopping a freshly swapped system process
  • Faster process termination with event-driven command runner
  • Cached panel rendering for instant search on busy machines
0.1.0In-panel updates
  • Check for updates right from the panel and restart into the new version with one click
  • Taller panel and settings layout — no scrolling in either language
  • Automatic update downloads are always on, quietly in the background
0.0001Initial public release
  • Watch and release development ports from a single menu bar panel
  • Project cards with process, PID, and path details
  • Berth grid for pinned ports with one-click release and force-kill
  • English and Simplified Chinese, light and dark appearance

Frequently asked questions

What is Berth?

Berth is a free, open-source macOS menu bar app for developers. It shows which development ports (like 3000, 5173, 8080, 5432) are in use, groups them by project, and lets you release a port with one click instead of running lsof and kill commands.

How do I free port 3000 on a Mac?

Without a tool you would run lsof -nP -iTCP:3000 -sTCP:LISTEN to find the PID, then kill <PID>. Berth shows port 3000 in its menu bar panel with the owning project and process, and releases it in one click — with a confirmation before anything is stopped.

Is Berth free?

Yes. Berth is completely free and open source under the Apache-2.0 license. There is no paid tier, no account, and no telemetry.

Is Berth safe to install?

Every build is signed with a Developer ID certificate, notarized by Apple, and stapled. Updates are distributed over HTTPS and verified with EdDSA signatures by Sparkle before installation. The app itself makes no network requests.

Which macOS versions does Berth support?

Berth requires macOS 14 (Sonoma) or later and runs on Apple Silicon Macs.

Does Berth replace lsof?

Berth uses lsof under the hood but adds project grouping, framework detection, watched-port indicators, and one-click release. It replaces the manual lsof-plus-kill workflow, not the tool itself.

Berth icon

Give your ports a berth.

Free and open source. Requires macOS 14 or later, Apple Silicon.

Download Berth 0.1.1

Berth-0.1.1.dmg · notarized · ~4.4 MB