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NxFilter vs FlashStart: catalog facts
NxFilter	FlashStart
Free Free for all uses, including commercial ones.	Paid Paid licences with a free trial; prices are given on request.
Self-hosted	Web
Per-user policies and reports with Active Directory integration Screen time control and data caps	Category, user, device and schedule-based content filtering Malware and phishing blocking at the DNS level
Not open source More setup than needed for a single household	Pricing is not published on the homepage Aimed mainly at businesses, ISPs and organisations
Downloadable app, Self-hosted	Hosted service
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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