Port Manager for macOS
Every ship needs a bosun.
See everything your Mac has open to the network — ports, tunnels, VPN, Docker — before someone else does. Then clear what shouldn't be there.
14-day free trial · No credit card required · Requires macOS 14+
You're deep in a debug session. Something's on port 3000. Was it your last dev server? A rogue process? An ngrok tunnel you forgot was still open to the internet? You open Terminal, type lsof, grep, squint at output. Again.
Bosun ends that.
Features
Know what's exposed, at a glance.
Not just port numbers — every tunnel, VPN connection, and container mapped to the process behind it.
Tunnel detection
ngrok and Cloudflare public URLs appear inline next to the local port. Share your dev server without opening a single tab.
VPN indicator
Your active macOS VPN is always visible in the panel header. Know you're tunneled before you wonder why something is slow.
Docker-aware
Container ports show the image name and Compose project, not "docker-proxy". Kill runs docker stop — not a blunt SIGTERM.
SSH tunnel parsing
Active SSH -L port forwards are parsed and shown automatically. See the full local → remote chain without reading ps output.
Resource stats
Expand any row to see CPU usage, memory footprint, uptime, and the full command line. No Activity Monitor detour.
Port history
Bosun remembers every port it has ever seen — what ran on it, when it last ran, how long it ran. Configurable retention.
One-click kill
Kill any process or Docker container instantly. Graceful SIGTERM first, SIGKILL if it lingers. No Terminal, no lsof, no grep.
Global hotkey
Press any shortcut you configure to open Bosun from anywhere — without switching apps or clicking the menu bar.
Simple, one-time pricing.
No subscriptions. Pay once, own it forever.
14-day free trial · Full-featured · No credit card
Pro
Up to 3 Macs
- ✓ Full feature access
- ✓ 14-day free trial
- ✓ Lifetime updates
- ✓ Up to 3 Macs
Enterprise
Unlimited Macs
Minimum 30 seats
- ✓ Full feature access
- ✓ Volume licensing
- ✓ Priority support
Live capture
This is what your Mac has exposed, right now.
Tunnels, containers, VPN — detected and shown the moment you open Bosun.
“On a ship, the bosun manages the crew — knows who's on deck, who's below, and who needs to walk the plank. Your dev stack is no different.”
— The bosun's philosophy
Common questions
- Is this really a one-time purchase?
- Yes. Pay once, use forever. No subscriptions, no annual fees, no surprises.
- What happens when the trial ends?
- Bosun stops working until you enter a license key. There are no auto-charges.
- What macOS version do I need?
- macOS 14 (Sonoma) or later.
- Can I use my license on a new Mac?
- Yes — deactivate on the old machine and activate on the new one. Personal allows 1 active Mac, Pro allows 3.