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

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