lsof-alternative

Project-aware lsof for macOS. Single-binary Go CLI that shows which dev project each listening port belongs to, and lets you kill, pause, or resume by port number. Find what's using port 3000.

see what's listening on local ports. faster than netstat, simpler than ss.

🔍 whyrun - Cross-platform CLI to trace a port/PID/name/open file back to the process that owns it, with full parent launch chain. 跨平台端口/进程/文件溯源诊断工具，零依赖单文件。