Netfox

A native local macOS network monitor

MacPrivacySecurity

▲ 82 votes5 commentsLaunched May 27, 2026

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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.

AI Analysis

📝 Summary

Netfox is a free, native macOS network monitor that discovers all local devices using Bonjour, ARP, SSDP, NetBIOS, and active probing. It displays them in a live view with full per-device history (first/last seen, online/offline events), five alert types for new/risky/returning devices, and a one-click security scan for common ports with plain-English explanations. Built 100% in SwiftUI, it has zero cloud, accounts, or telemetry—keeping all data local for maximum privacy. It solves critical pain points of invisible IoT/smart devices, unknown network risks, and lack of simple monitoring tools without compromising user data. The value proposition is effortless, private, and comprehensive local network visibility and security for Mac users.

📈 Market Timing

In 2025-2026, timing is favorable due to explosive growth in IoT/smart home devices, rising cybersecurity threats, and heightened user demand for privacy-focused tools amid stricter data regulations (e.g., GDPR expansions). Remote/hybrid work increases home network complexity, while macOS users seek native, no-cloud solutions. No major economic downturns expected to hinder adoption. Excellent Timing.

✅ Feasibility

High feasibility. Technical difficulty is moderate—leveraging mature macOS APIs and standard protocols (already implemented in SwiftUI). Very low development/operation costs as a standalone desktop app with no servers or cloud. Minimal compliance risks (local-only, no data collection). Strong scalability for updates across macOS versions. No supply chain issues. Key reason: proven technology with low ongoing maintenance.

🎯 Target Market

Primary segments: Tech-savvy macOS users (developers, IT pros, privacy enthusiasts), home users with IoT/smart devices, and small office owners. Demographics: 25-55 years old, higher income, mainly in US, Europe, and urban China. Geographic: Global but concentrated in Apple-heavy markets. Estimated TAM: ~200M macOS users; SAM: ~20M security-conscious; SOM: 500K-1M potential. Core pains: unknown devices on network, security blind spots. High willingness to pay for premium features, though currently free.

⚔️ Competition

Medium. Direct competitors: 1. LanScan (lanscan.com), 2. Fing (fing.com), 3. IP Scanner by 10base-t (10base-t.com), 4. Network Radar (mac-app.com). Advantages vs competitors: completely free, 100% local with zero telemetry/privacy risks, native SwiftUI experience, combined multi-protocol discovery + alerts + plain-English security scan. Disadvantages: Mac-only (vs cross-platform Fing), lacks bandwidth monitoring or advanced packet inspection found in some paid tools like Little Snitch.

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