PortKiller is not created solely for closing a port, but it provides a cross-platform port monitoring and management tool that can listen to all TCP ports, check running processes and display information about each.

Particularly useful to software developers and network administrators, this application can do more than monitor opened ports and kill running processes: it can filter process types and help with process management, handle Kubernetes port forwarding, manage Cloudflare Tunnel and share connections.
Monitor port connections and filter them out
No installation is required, as PortKiller is immediately available to you when you double click on its main executable. The application starts monitoring running TCP processes and port connections, displaying them all in one place and building a comprehensive list of ports for the entire host system.

PortKiller is not created solely for closing a port, but it provides a cross-platform port monitoring and management tool that can listen to all TCP ports, check running processes and display information about each.

Particularly useful to software developers and network administrators, this application can do more than monitor opened ports and kill running processes: it can filter process types and help with process management, handle Kubernetes port forwarding, manage Cloudflare Tunnel and share connections.
Monitor port connections and filter them out
No installation is required, as PortKiller is immediately available to you when you double click on its main executable. The application starts monitoring running TCP processes and port connections, displaying them all in one place and building a comprehensive list of ports for the entire host system.