lsof

Lightweight, performant interactive network connection monitor with friendly service names

python version of lsof to graphviz parser

Find what's using a port, who started it (Claude Code, Cursor, Docker…), whether your network can reach it, and stop it safely. An lsof alternative for developers: TUI, CLI and a live harbour view.

linux shell scripts mostly of the sysadminnish sort

iTerm2 status bar: live TCP listening ports with process names (lsof). AutoLaunch Python API script for macOS.

a Python package that allows you to monitor active TCP ports used by a specific process (PID) in real-time

Find and kill whatever process is hogging a port. One command, works the same on Windows, macOS, and Linux.

Who really holds this port? /proc-native port attribution: process tree, systemd unit, docker container, socket activation. Single file, no lsof needed.

端口被谁占了？一条命令看清并释放。零依赖。

文件被占用无法删除？找出锁它的进程。取代已归档的 wholock。

已归档。请用 hc-ui/wholocks。

CLI that tells you what process is holding a local TCP port (PID, user, full command) — instead of guessing why it's 'connection refused'.

Alfred workflow to list listening TCP ports and kill their processes

Investigate open file handles and Spotlight indexing state when a macOS volume will not eject.

Investigate why a Time Machine destination or external macOS volume is still in use.

wtfport is a no-nonsense command-line utility that quickly tells you what process is listening on a specific TCP or UDP port. It's built for speed and clarity, making it ideal for developers, sysadmins, and anyone dealing with network debugging.

Explains which process is holding a Linux mount point/path busy, and why (fuser/lsof, human-readable).