Compare software

simplewall vs ZoneAlarm: catalog facts
simplewall	ZoneAlarm
Free Free and open source under the GPL 3.0.	Freemium Free firewall and free antivirus, with paid security suites.
Windows	Windows, macOS, Android, iOS
A plain allow and block list rather than a stream of pop-ups Internal block list aimed at Windows telemetry	Free outbound firewall that controls program network access Free antivirus option
The project itself says it is for advanced users Not a Windows Firewall interface; it uses a separate rule system	Most extra protections require a paid suite 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
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 1, 2026

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