This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
Bosun
Every port, tunnel, VPN, and container your Mac has open
Menu bar app for macOS that shows every listening port, active ngrok/Cloudflare tunnel, VPN connection, and Docker container mapped to the process that owns it, with one-click kill. Native Swift, no Electron. 14-day free trial.
I built this after losing an hour tracking down which of six Docker containers was squatting on port 5432 lsof and Activity Monitor show you a port, not what's actually reachable on your Mac right now.
Bosun puts everything in one menu bar view: every listening port, active ngrok/Cloudflare tunnels, VPN connections, and Docker containers, all mapped to the process that owns them, with one click kill. The part that made me actually finish building it: a tunnel you forgot was open is a real way attackers keep quiet remote access once they're in not just a dev-workflow annoyance.
Native Swift/SwiftUI, no Electron, no telemetry on your actual port/process data. 14 day free trial, no signup required. Would love your feedback, especially if you run a lot of local containers or dev tunnels day to day.
The process ownership view is exactly what I've wanted for ages. One thing that would make it even better: when I kill a process, surface a brief note about any dependent services or child processes that will also get terminated, so I'm not surprised by cascading shutdowns.
The mapping from port back to process is genuinely useful since macOS makes it annoying to track this down manually. One thing I'd love is being able to save a labeled "known safe" list of processes and tunnels so the app only alerts me when something new or unfamiliar shows up on a port, instead of lighting up for my everyday dev stack.
Love that it surfaces docker and tunnel processes alongside regular listeners, that visibility is super useful for debugging. One thing I'd love to see is a saved snapshot feature so you can capture the full port/process layout before making changes and compare it to after, makes it way easier to spot anything you accidentally left exposed.
The native Swift approach really shows here, you can tell it actually lives in the menu bar instead of feeling like a browser tab pretending to be one. Love that the one-click kill is right there on the process row too, no digging through submenus.
About Bosun on Product Hunt
“Every port, tunnel, VPN, and container your Mac has open”
Bosun was submitted on Product Hunt and earned 0 upvotes and 5 comments, placing #148 on the daily leaderboard. Menu bar app for macOS that shows every listening port, active ngrok/Cloudflare tunnel, VPN connection, and Docker container mapped to the process that owns it, with one-click kill. Native Swift, no Electron. 14-day free trial.
Bosun was featured in Productivity (656.2k followers), Developer Tools (515.9k followers) and Menu Bar Apps (12.2k followers) on Product Hunt. Together, these topics include over 225.2k products, making this a competitive space to launch in.
Who hunted Bosun?
Bosun was hunted by Benjamín Wünkhaus Cepeda. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Benjamín Wünkhaus Cepeda