Today I'm releasing Open Sesame, a lightweight macOS menu bar application for monitoring network port activity on your machine.
The Problem
As developers, we often run multiple services locally—databases, API servers, development tools—each binding to different ports. Keeping track of what's running and identifying rogue processes can be tedious, usually requiring terminal commands like lsof or netstat.
The Solution
Open Sesame provides a clean, native interface that lives in your menu bar. With a single click, you can:
- View all open network ports and their associated processes
- Identify which applications are listening on specific ports
- Quickly spot unexpected network activity
- Monitor your system's network footprint in real-time
Built with Swift
The app is built entirely in Swift using AppKit, keeping it lightweight and performant. It integrates seamlessly with macOS and follows Apple's Human Interface Guidelines for a native experience.
Open Source
Open Sesame is completely free and open source. You can download the latest release or browse the source code on GitHub:
github.com/br3akzero/open-sesame/releases
Contributions and feedback are always welcome.
Break Zero