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FlashStart vs Zenarmor: catalog facts
FlashStart	Zenarmor
Paid Paid licences with a free trial; prices are given on request.	Freemium Free to start, with paid plans for business features.
Web	Linux, Self-hosted
Category, user, device and schedule-based content filtering Malware and phishing blocking at the DNS level	Web and application filtering on your own gateway Runs on a gateway, in the cloud or on an endpoint
Pricing is not published on the homepage Aimed mainly at businesses, ISPs and organisations	Closed source Marketing and higher tiers are aimed at businesses
Hosted service	Self-hosted, Hosted service
Closed source	Closed source
License not stated	License: Proprietary
Account needed	Not stated if an account is needed
Needs internet	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.