A native macOS network monitor. Combines Bonjour, ARP, SSDP, NetBIOS and active probing to show every connected device — Apple gadgets, smart TVs, IoT, printers — in one live window. Full per-device history: first seen, last seen, every online/offline transition. Five alert types for new, risky, or returning devices. One-click security scan checks common ports with plain-English findings. Built 100% in SwiftUI. No cloud, no account, no telemetry. Your data stays on your Mac. Free.