portcheck
See what's using a port and free it safely: which process, who started it, stop it.
Fixes "port already in use" (EADDRINUSE, Address already in use).
pipx install portcheck-tool # or: pip install portcheck-tool / uv tool install portcheck-tool
portcheck 3000 # who holds port 3000? (exit 1 if in use)
portcheck kill 3000 # stop it, after confirming; never system processes
portcheck free # a free port
portcheck # interactive view of every listening port
PORT PROTO STATUS PID PROCESS USER
3000 tcp in-use 41852 node alice
Works on macOS, Linux and Windows (x64 and arm64). This package installs the native
portcheck binary; there's no Python code and nothing is downloaded at runtime.
Also available for VS Code, JetBrains IDEs, Edge and Firefox, and through Homebrew,
Scoop and npm (npx portcheck-cli 3000).
- Documentation: https://roystondwork-dev.github.io/portcheck/
- Source (MIT): https://github.com/roystondwork-dev/portcheck
1 maintainer
Metadata
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Release files for portcheck-tool 0.14.0
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