
Port Monitor
MacMonitor
Open Ports
See what's exposed. The macOS menu bar app that shows every open port, tunnel, VPN, and container — before it's a problem.

Cursor
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GitHub Copilot
Google Antigravity
opencode
Codex 3.0 by OpenAI
Windsurf Editor
Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebase—no more context switching, just breakthrough results.
Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | bosun.dev | anthropic.com |
| Pricing | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


Bosun is a native macOS menu bar app that shows you everything your Mac has open to the network, right when you need it, with no Terminal digging required. It runs lsof in the background to list every listening port, then goes further than a simple port scanner: it maps each port to the process...
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What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
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Overall verdict
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Bosun.dev and Claude Code.
Bosun.dev's answer
Swift 5.9+, SwiftUI + AppKit (NSStatusItem), lsof for port scanning, Sparkle for auto-updates, Polar for licensing/payments. No Electron, no third-party dependencies beyond Sparkle.
Bosun.dev's answer
Developers who run local dev servers, Docker containers, and tunnels (ngrok/Cloudflare) daily and need instant visibility into what's bound to which port, without opening Terminal or Activity Monitor.
Bosun.dev's answer
Bosun is the only menu bar tool that unifies port scanning with network context: it maps ngrok/Cloudflare tunnels, native VPN status, Docker containers, and SSH -L forwards to the process actually holding each port, then lets you kill it in one click. Most alternatives only do one of those things.
Bosun.dev's answer
iStat Menus monitors the system but not tunnels or containers. Little Snitch blocks connections but doesn't show you what's already running. Seeports comes closest (port scanning for Docker/K8s/dev servers) but lacks tunnel and VPN detection. Bosun covers all of it natively, with zero third-party dependencies, no Electron overhead, and a one-time price instead of a subscription.
Bosun.dev's answer
Built out of a personal need: constantly losing track of which local dev server, Docker container, or forgotten tunnel was holding a port, and resorting to lsof in Terminal every time. Bosun turns that into a native, always-visible menu bar view.
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