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E2Guardian vs Zenarmor: catalog facts
E2Guardian	Zenarmor
Free Free to download and use.	Freemium Free to start, with paid plans for business features.
Linux, Self-hosted	Linux, Self-hosted
Proxy, transparent and ICAP modes Filters on content, not only domain names	Web and application filtering on your own gateway Runs on a gateway, in the cloud or on an endpoint
Needs a Linux server and proxy configuration knowledge Filtering encrypted traffic requires extra setup	Closed source Marketing and higher tiers are aimed at businesses
Self-hosted	Self-hosted, Hosted service
Closed source	Closed source
License not stated	License: Proprietary
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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