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puddletag vs MusicBrainz Picard: catalog facts
puddletag	MusicBrainz Picard
Free Free and open source.	Free Free and open source under the GPL, maintained by the non-profit MetaBrainz Foundation.
Linux	Windows, macOS, Linux
Spreadsheet view shows all tags for many files at once Tag-from-filename and rename-from-tag patterns	AcoustID fingerprinting identifies files from the audio itself, even with no tags at all Album-oriented matching produces consistent tags across a whole release
Built primarily for Linux Lacks some features found in Mp3tag	Needs an internet connection; it is a front end to an online database The album-first workflow is awkward for loose singles and compilations
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-2.0
No account needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 21, 2026

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