Compare software

Stubby vs ctrld: catalog facts
Stubby	ctrld
Free Free and open source under the BSD licence.	Free The proxy is free; Control D's filtering service is a separate product.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Self-hosted, Command line
Encrypts the last mile of DNS for the whole machine, not just one browser Strict profile refuses to fall back to unencrypted DNS	Forwards queries to encrypted DNS upstreams Split-horizon and policy-based routing of queries
Configuration is a YAML file with no interface Only protects the path to the resolver; the resolver still sees your queries	Configuration is file-based and aimed at technical users Most documented use centres on Control D's own service
Downloadable app	Downloadable app, Self-hosted
Open source	Open source
License: BSD-3-Clause	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

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