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portcheck

See what's using a port and free it safely: which process holds it, who started it, and a stop that never touches system processes. It's the fix for "port already in use" / EADDRINUSE, on macOS, Linux and Windows.

$ portcheck 3000
PORT  PROTO  STATUS  PID    PROCESS  USER
3000  tcp    in-use  41852  node     alice

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🚀 Install	Homebrew, one-command installer, npm, PyPI, Scoop, packages
🧩 Integrations	VS Code, JetBrains, browsers, AI assistants (MCP), Raycast, Neovim, Zed, menu bar
❓ FAQ	Common questions and fixes
📖 Documentation	Full guides and the command reference

Get help

• Questions: Discussions → Q&A
• Ideas: What should portcheck do next?
• Bugs: Issues
• Security: report privately

This wiki is a short overview. The documentation site is the source of truth.