Port Detective is a Windows port inspection and troubleshooting tool built for developers, IT teams, and technical users who need a faster way to diagnose blocked ports. The application shows which processes are listening on ports, including the process name, PID, and executable path. Instead of switching between Task Manager, Resource Monitor, PowerShell, and command-line utilities, users can search a port and see the owner immediately. The free version includes core port visibility, instant lookup, and a small number of safe kills for terminating conflicting processes. Port Detective Pro expands the tool with unlimited protected process kills, a Ctrl+K command palette, parent and child process inspection, and connection-history exports. Its Port Guard watchdog can monitor important ports every 250 milliseconds and optionally remove intruding processes while restoring the correct owner. The Pro edition also supports remote scans of servers, VMs, Docker bridges, and host-to-container port mapping. Port Detective is built as a native Rust and Tauri application, helping it stay lightweight, fast, and typically under 50 MB of RAM. The software gives Windows users a focused, privacy-conscious way to handle port conflicts without subscriptions, telemetry, or unnecessary system-monitoring clutter.