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DNSViz vs DNSSEC Debugger: catalog facts
DNSViz	DNSSEC Debugger
Free Free to use online and open source under GPL-2.0.	Free Free to use online.
macOS, Linux, Web, Command line	Web
Graphs the DNSSEC chain of trust in a way that is easy to follow Lists detected configuration errors	Shows each step of the DNSSEC chain of trust Custom trust anchors for testing unpublished keys
Focused on DNSSEC rather than general DNS or mail checks The graphs take some DNS knowledge to read	Covers DNSSEC only Output assumes some DNSSEC knowledge
Downloadable app, Web application	Web application
Open source	Closed source
License: GPL-2.0	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Needs internet
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.