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puddletag vs Kid3: catalog facts
puddletag	Kid3
Free Free and open source.	Free Free and open source. Hosting, hardware and any external services are separate.
Linux	Windows, macOS, Linux, Android
Spreadsheet view shows all tags for many files at once Tag-from-filename and rename-from-tag patterns	Supports multiple audio tag formats Can rename files using tag information
Built primarily for Linux Lacks some features found in Mp3tag	Tagging changes metadata rather than repairing the audio itself.
Downloadable app	Downloadable app
Open source	Open source
License not stated	License not stated
No account 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 24, 2026	Official website Full listing and sources Checked September 22, 2026

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