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ZoneAlarmWindows Firewall Control
Freemium

Free firewall and free antivirus, with paid security suites.

 Free

Free to download and use.

Windows, macOS, Android, iOS Windows
  • Free outbound firewall that controls program network access
  • Free antivirus option
  • Prompts when unknown programs try to connect out
  • One-click switching between filtering modes
  • Most extra protections require a paid suite
  • Closed source
  • Windows only
  • Medium filtering needs rules for every program you use
Downloadable app Downloadable app
Closed source Closed source
License not stated License not stated
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked October 1, 2026

Checked September 24, 2026

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