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Knot DNS vs BIND 9: catalog facts
Knot DNS	BIND 9
Free Free to download and use under the GPL 3 or later license.	Free Free and open source under the Mozilla Public License 2.0.
macOS, Linux, Command line	macOS, Linux, Self-hosted, Command line
Automatic DNSSEC signing IXFR, dynamic updates and response rate limiting	dig is a standard tool for DNS troubleshooting Full-featured DNS server with DNSSEC
Authoritative only, with no recursive resolver No Windows support	dig comes as part of the larger BIND package Server configuration has a steep learning curve
Downloadable app	Downloadable app, Self-hosted
Open source	Open source
License: GPL-3.0-or-later	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 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.