Port Killer

Note: I got sick of asking Claude to find the PID and kill it, so I asked Claude to make a Tauri app and boom - 40 mins later here we are haha. Enjoy!

A lightweight macOS menu bar app that shows your development ports and lets you kill them with one click. Built with Tauri for a tiny 2.5MB app size.

What it does

• Click the ⚡ icon in your menu bar to see all your dev servers
• Click any port to kill it instantly - no more hunting for PIDs
• Only shows development ports (3000, 5173, 8080, etc.) - no system noise
• Tiny 2.5MB app built with Rust + Tauri (not Electron!)

Quick Start

1. Download the latest .dmg from Releases
2. Drag Port Killer to Applications
3. Launch it - you'll see a ⚡ in your menu bar
4. Click the ⚡ to see and kill your dev ports

Build from Source

git clone https://github.com/ParkerRex/port-killer.git
cd port-killer
bun install
bun run tauri build

How to Use

Menu Bar:

• Click ⚡ to see ports
• Click any port to kill it
• That's it!

Main Window (optional):

• Opens when you launch the app
• Search, filter, and categorize ports
• Two-click kill for safety
• Press ESC to hide

Supported Ports

Automatically detects:

• 3000-3010 - React, Next.js, Node.js
• 4000-4010 - Various frameworks
• 5000-5010 - Flask, Python
• 5173 - Vite
• 5432 - PostgreSQL
• 6379 - Redis
• 8000-8010 - Django
• 8080-8090 - Web servers
• And more...

Why Port Killer?

• Faster than lsof -i :3000 + finding the PID + kill -9
• Safer than killing the wrong process
• Lighter than Activity Monitor or other Electron apps
• Focused on development ports only

Contributing

PRs welcome! The codebase is small and easy to understand.

Built With

• Tauri - Rust-based app framework
• React + TypeScript - UI
• lsof - Port detection

License

MIT License - see LICENSE file for details

Acknowledgments

Built with Tauri - A framework for building tiny, blazing fast binaries for all major desktop platforms.