01
Download the verified release
Use the latest release button on this page and select the published PortMonitor ZIP asset.
All productsFocused on the job,
Up and running,
Privacy & permissions Important safety note Founder’s note
PortMonitor
PortMonitor turns the output of macOS networking tools into a readable native table. Inspect commands, process IDs, users, protocols, and addresses; search the list; refresh it; and, when necessary, terminate a selected process.
Latest published release v1.1.0 · April 14, 2026 · Release notes
PROCESSPORTPROTOCOLnode:3000TCPsharingd:8770UDPrapportd:49162TCP
PlatformmacOS · native Swift app
StatusOpen source
Best forDevelopers and Mac users troubleshooting local services, occupied ports, or unfamiliar network activity.
What it does
Focused on the job,
not the noise.
01TCP listening ports and UDP network connections
02Process name, PID, user, protocol, and network address
03Search across commands, process IDs, and addresses
04Refresh and explicit process termination actions
Installation
Up and running,
step by step.
A supported Mac capable of running the published native release. The repository does not currently document a precise minimum macOS version.
02
Extract the archive
Open the downloaded ZIP, then move PortMonitor.app to Applications.
03
Open the app
Launch PortMonitor from Applications. If macOS presents a standard security prompt, review the app source and publisher before deciding whether to open it.
PortMonitor runs Apple’s local lsof utility to read connection information. The inspected source performs this work on your Mac; no remote account or cloud data store is involved.
The Kill action sends a force-termination signal to the selected process. This can interrupt applications, development servers, and system-adjacent services, and may cause unsaved work to be lost. Confirm the PID and process name before using it.
Removal
Uninstall cleanly.
01
Quit PortMonitor
Close the app before removal.
02
Remove the application
Move PortMonitor.app from Applications to the Trash.
“PortMonitor grew from repeatedly reaching for lsof while developing. The goal is to make that useful local information calmer and easier to scan.”
Rahul Sharma · Mango Orbit