ferman: A Tiny CLI for Inspecting and Freeing Busy Ports

Busy ports are one of those tiny problems that interrupt real work far more often than they should. You start a dev server, a local database, a preview app, or a test runner, and something fails because a port is already in use. Then the usual dance begins: check what is using the port figure out whether it is safe to stop kill the process retry your actual work That friction is exactly why I built ferman . ferman is a small cross-platform CLI for inspecting busy ports, identifying the process behind them, and freeing them safely. It is built for developers, but also for AI agents, scripts, and local automation workflows that need deterministic output and low ambiguity. Why I built it The core problem is simple: a port is occupied you need to know what is using it you may want to free it There are already OS-level commands for this, but they are not consistent across platforms, and they are not especially friendly for automation. On macOS and Linux you might use lsof . On Windows you m