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ddclient vs Cloudflare DDNS: catalog facts
ddclient	Cloudflare DDNS
Free The open-source software is available without a license fee. Hosting, hardware and…	Free The open-source tool is available without a license fee.
macOS, Linux, Command line	Linux, Self-hosted, Command line
Supports numerous DNS providers through one configuration.	Handles IPv6 as well as IPv4 records Tiny container with one configuration file
Requires a supported provider and its update credentials.	Cloudflare-specific; it does not work with other DNS providers Requires an API token with DNS edit permission
Downloadable app	Self-hosted
Open source	Open source
License: GPL-2.0	License not stated
Not stated if an account is needed	Not stated if an account is 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 22, 2026

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