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WatchYourLAN vs Angry IP Scanner: catalog facts
WatchYourLANAngry IP Scanner
Free

Free to run yourself, with the source published on GitHub.

Free

Free and open source under GPL v2.

Linux, Self-hosted Windows, macOS, Linux
  • Notifications when an unknown device joins the network
  • Online and offline history for each host
  • Scans a local network or an internet range, by range, random selection or an address file
  • Extensible through data fetchers for hostname, MAC address, ports and more
  • Covers the local network only
  • Needs a machine that stays on to keep watching
  • Needs a Java runtime, which the packaged builds bundle but the bare jar does not
  • The macOS build has been looking for a maintainer since 2019
Self-hosted Downloadable app
Closed source Open source
License not stated License: GPL-2.0
No account needed No account needed
Works offline Works offline

Checked September 23, 2026

Checked September 20, 2026

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