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Duck DNS vs FreeDNS: catalog facts
Duck DNS	FreeDNS
Free Free to use; supported by donations through Patreon.	Freemium Free DNS and subdomain hosting, with premium options available.
Web	Web
No paid tiers Simple, documented update mechanism	Large choice of shared domains for subdomains Dynamic updates with a single curl call
Limited to the service's own subdomains Few features beyond basic dynamic DNS	Dated, text-heavy web interface Some features reserved for premium users
Hosted service	Hosted service
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Needs internet	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.