Developer tools
Port Killer Lite Kill the process using a port on Windows
Find which process is using a port on Windows and kill it in one click. Fix 'port already in use' errors fast.
Port Killer Lite shows which process is holding a network port on Windows and lets you stop it in one click. When your dev server says the port is already in use, you no longer have to look up the process ID in the terminal and run a kill command.
It is made for web and backend developers who often hit stuck Node, Vite, React, Python or Docker processes on ports like 3000, 5173 or 8080.
Features
- Detect which process is using a TCP port
- View process name, PID, and connection details
- Kill processes in one click with confirmation
- Resolve port conflicts quickly
- Free blocked local development servers
- Avoid terminal commands for common port cleanup
- Use a clean Windows 11-style interface
- Switch between dark and light mode
- Run lightweight native Windows operations
- Work locally with no telemetry or tracking
- Support backend and DevOps workflows
- Handle local servers, containers, and API debugging
Privacy
The app works with local port and process information; the store listing is the source for current privacy details.
Frequently asked questions
How do I fix 'port already in use' on Windows?
Open Port Killer Lite, find the process that holds the port and stop it in one click. No terminal commands are needed.
Can I free up ports like 3000 or 8080?
Yes. It lists which process is using a port, so you can release any busy port such as 3000, 5173 or 8080.
Who is it for?
Developers who run local servers and often hit stuck processes that block a port.
