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Knot DNS vs Technitium DNS Server: catalog facts
Knot DNS	Technitium DNS Server
Free Free to download and use under the GPL 3 or later license.	Free Free and open source under the GPL.
macOS, Linux, Command line	Windows, macOS, Linux, Self-hosted
Automatic DNSSEC signing IXFR, dynamic updates and response rate limiting	Authoritative and recursive in one server, so it hosts your zones and resolves everything else Blocks ads and malware for every device on the network without per-device setup
Authoritative only, with no recursive resolver No Windows support	Considerably more complex than Pi-hole if all you want is ad blocking Running your own DNS means DNS outages become your problem
Downloadable app	Self-hosted, Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 21, 2026

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