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ZoneAlarm vs Fort Firewall: catalog facts
ZoneAlarm	Fort Firewall
Freemium Free firewall and free antivirus, with paid security suites.	Free Free and open source.
Windows, macOS, Android, iOS	Windows
Free outbound firewall that controls program network access Free antivirus option	Per-application and global network rules Wildcards and parent-process based rules
Most extra protections require a paid suite Closed source	Windows only Requires familiarity with firewall rules
Downloadable app	Downloadable app
Closed source	Open 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
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 24, 2026

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