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Pi-hole vs sdns: catalog facts
Pi-hole	sdns
Free Free and open source under the European Union Public Licence 1.2, funded by donations and…	Free Free to use from its GitHub repository.
Linux, Self-hosted, Web	Linux, Self-hosted, Command line
Blocks advertising in mobile apps and on smart televisions, not just browsers Covers every device on the network with nothing installed on them	Full recursive resolution without a public upstream Built-in blocklist filtering
Runs on Linux; it is not a program you install on a laptop Over-blocking breaks sites, and someone has to fix it when it does	Configured by file with no graphical interface Smaller community than Unbound or Pi-hole
Self-hosted	Self-hosted
Open source	Closed source
License: EUPL-1.2	License not stated
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 2, 2026

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