Event-driven background monitoring
Runs as a Launch Agent in your macOS login session and stays idle until a port collision occurs, so it does not rely on constant polling.
Portia
Portia is a native macOS utility that identifies the process blocking a network port and lets you stop it from the desktop. It offers a free Lite version in the App Store and a paid direct-download version with PID details, background monitoring, and one-click process termination.
Overview
Portia is a native macOS utility for finding the process that is blocking a network port and stopping it from the desktop. It watches for port collisions, identifies the offender, and offers a one-click Strike action instead of requiring manual terminal commands such as `lsof`.
The product is split into a free Portia Lite version and a paid full version. Lite can show blocked port information for the current user, while the full version adds PID and process details, process termination, and background operation as a Launch Agent.
Portia is positioned for macOS developers who frequently run into `EADDRINUSE` errors when starting local servers. Its technical explanation page focuses on how ports, PIDs, kernel socket tables, and sandbox restrictions affect whether an app can inspect and kill the process holding a port.
Features
Blocked-process identification
Identifies the process owning the contested port and shows the PID, process name, and executable path in the full version.
One-click process kill
Offers a one-click Strike action that sends a terminate signal to the blocking process, avoiding manual terminal commands.
Portia Lite for limited inspection
Provides a free Lite version in the App Store with menu bar port overview, blocked port number, and basic process name for the same user.
Native macOS app packaging
Works as a native macOS utility built for Apple Silicon and macOS 26+, with a signed and notarized binary.
Direct-download full version
Runs outside the App Store sandbox in the paid version, which is required for full socket inspection, external process lookup, and process termination.
Use cases
Resolve local port collisions
Start a local dev server and immediately see which process is occupying the port if `EADDRINUSE` appears, without switching to terminal troubleshooting.
Check blocked ports in the App Store version
Use the Lite version when you only need to confirm that a port is blocked and learn the port number, especially for your own user processes.
Inspect and terminate the blocker
Use the paid version when you need the owning PID, process path, and direct kill action for a faster cleanup workflow.
Automate ongoing port monitoring
Keep Portia running in the background as a Launch Agent so it waits for collisions instead of manually checking ports before every run.
Work around App Store sandbox limits
Prefer the direct-download version when you need functionality that the App Store sandbox does not allow, such as inspecting other users' processes or killing them.
Pros and Cons
Pros
- Detects blocked ports and identifies the owning process on macOS.
- Removes the need to run terminal commands every time a port collision happens.
- Offers a background Launch Agent that stays idle until needed.
- Provides a free Lite version for basic port visibility.
- The paid version adds PID, process path, and one-click process termination.
Cons
- The App Store Lite version cannot inspect other users' processes or kill the process blocking a port.
- The full product requires a direct download outside the App Store sandbox for its complete workflow.
- The source does not describe integrations, collaboration features, or non-macOS support.
FAQ
What platforms does Portia support?
Portia runs on macOS and is built for Apple Silicon and macOS 26 or later. The home page offers a Lite version through the App Store and a paid direct-download version with full capabilities.
How does Portia work?
Portia installs as a macOS Launch Agent and waits in the background until it detects a port collision. When a blocking process is found, it shows a native notification and lets you strike the process with one click.
What is the difference between Portia Lite and the paid version?
Portia Lite can show that a port is blocked and identify the blocked port number. The full version adds PID and process details, one-click process kill, and background operation outside the App Store sandbox.
Is Portia meant for individual or team use?
The source does not describe team features, shared workspaces, or multi-user administration. It appears to be a local macOS utility rather than a collaboration tool.
Does Portia integrate with other developer tools?
Portia is focused on identifying and killing the process blocking a port on macOS. The product pages do not describe integrations with other tools or services.
Quick Facts
- Category
- Developer Tool
- Platform
- macOS
- Primary users
- Mac developers working with local ports
- Source domain
- getportia.app
- Pricing
- Free Lite version; paid full version available as a one-time $4.99 direct download
- Workflow
- Launch Agent monitoring, blocked-port detection, native notification, one-click process kill
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