witr: Trace Any Process, Port, or File Back to Its Origin
Content is AI-assisted and may contain inaccuracies.
witr answers the question behind a busy port: why is this running? Point it at a process, port, container, or file and it traces back to the exact chain that started it, using one command, machine-readable JSON, or an interactive TUI.
Running witr 8000 identifies what is holding a port and closes it from the terminal. It is written in Go, open source, and works on Windows, macOS, and Linux. Because it resolves the full parent chain rather than just a PID, it helps with stray dev servers, orphaned containers, and background jobs that outlive a closed terminal.