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Knot Resolver vs BIND 9: catalog facts
Knot Resolver	BIND 9
Free Free to download and use under the GPL.	Free Free and open source under the Mozilla Public License 2.0.
Linux, Self-hosted	macOS, Linux, Self-hosted, Command line
Small core with features in optional C and Lua modules Scales from home routers to large deployments	dig is a standard tool for DNS troubleshooting Full-featured DNS server with DNSSEC
Configured by hand, with no graphical dashboard Some newer features, such as unencrypted DoH mode, are still alpha	dig comes as part of the larger BIND package Server configuration has a steep learning curve
Self-hosted	Downloadable app, Self-hosted
Open source	Open source
License: GPL	License: MPL-2.0
No account needed	No account 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 23, 2026

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