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WatchYourLAN vs MyLanViewer Network/IP Scanner: catalog facts
WatchYourLAN	MyLanViewer Network/IP Scanner
Free Free to run yourself, with the source published on GitHub.	Paid Commercial software with a registration page; check the site for current terms.
Linux, Self-hosted	Windows
Notifications when an unknown device joins the network Online and offline history for each host	Detailed per-device information including MAC and NIC vendor Alerts when new devices join the network
Covers the local network only Needs a machine that stays on to keep watching	Windows only Requires registration for full use
Self-hosted	Downloadable app
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.