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Knot Resolver vs Unbound: catalog facts
Knot Resolver	Unbound
Free Free to download and use under the GPL.	Free Free and open source under the BSD licence.
Linux, Self-hosted	Windows, macOS, Linux, Self-hosted
Small core with features in optional C and Lua modules Scales from home routers to large deployments	DNSSEC validation and encrypted transports in a small, audited resolver Runs recursively, so no upstream resolver sees your queries
Configured by hand, with no graphical dashboard Some newer features, such as unencrypted DoH mode, are still alpha	Configuration is a text file with many options No filtering or blocklists of its own; that needs another layer
Self-hosted	Self-hosted
Open source	Open source
License: GPL	License: BSD-3-Clause
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 September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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