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WatchYourLAN vs NetworkConnectLog: catalog facts
WatchYourLAN	NetworkConnectLog
Free Free to run yourself, with the source published on GitHub.	Free Freeware from NirSoft, free to use and redistribute without charge.
Linux, Self-hosted	Windows
Notifications when an unknown device joins the network Online and offline history for each host	No installation, runs as a single executable Can export the log automatically on every change
Covers the local network only Needs a machine that stays on to keep watching	Smartphones that ignore ARP requests may appear disconnected Windows only
Self-hosted	Downloadable app
Closed source	Closed source
License not stated	License: Freeware
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 8, 2026

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