Netfox review
A free Mac app that tracks local devices, open ports and nearby Wi-Fi security.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Netfox is a native macOS app for discovering devices on a local network and monitoring potential home-network risks. It is aimed at people managing a home network from a Mac, especially those who want device and Wi-Fi alerts without paying for the app. Device discovery combines Bonjour, ARP, SSDP, NetBIOS and active ICMP probing. Netfox can identify device vendors, categories, exposed ports and server banners, and keeps a history of devices’ online/offline transitions and identity changes.
Its monitoring combines several useful views rather than relying on a device list alone. Alerts cover new and returning devices, risky arrivals, opened ports and new services. Open-port checks apply to reachable LAN devices and are framed around ports associated with home-network risks. For nearby Wi-Fi networks, the app shows a security grade, channel, band and signal history; a menu-bar view provides network status and active-alert information. This makes Netfox a fit for Mac owners who want a continuing view of what is on their network and basic signals to investigate, rather than a broad security suite.
Netfox is described as free and runs locally without a cloud account. Its narrow platform scope is a practical constraint: it is for macOS, not a cross-platform household or business deployment. The published description centers on local-network discovery and monitoring, so people needing wider network coverage or a larger-team platform should look elsewhere. For a solo user or small household with a Mac, the combination of discovery methods, device history, alerts and nearby Wi-Fi grading brings several relevant checks into one desktop app. Choose it if those local visibility features are the priority; skip it if you need coverage beyond a Mac-managed local network.
Netfox pros and cons
- Where it wins
- Finds devices using Bonjour, ARP, SSDP, NetBIOS and active probing
- Tracks device changes and alerts on new devices, open ports and services
- Grades nearby Wi-Fi security and shows channel, band and signal history
- Where it doesn't
- Runs only on macOS
- Checks open ports on reachable LAN devices, not beyond the local network
- Designed for solo and small-scale home network management
Netfox fact sheet, pricing and score →
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