Compare software

simplewallGlassWire
Free

Free and open source under the GPL 3.0.

 Freemium

A free version is available. Longer history and extra features require a paid licence.

Windows Windows, Android
  • A plain allow and block list rather than a stream of pop-ups
  • Internal block list aimed at Windows telemetry
  • Visual history makes it obvious which application started talking and when
  • Alerts on first connections and on changes to system network settings
  • The project itself says it is for advanced users
  • Not a Windows Firewall interface; it uses a separate rule system
  • Longer history retention and several features need a paid licence
  • Windows and Android only, closed source
Downloadable app Downloadable app
Open source Closed source
License: GPL-3.0 License not stated
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked September 21, 2026

Checked September 22, 2026

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