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Kid3 vs Classical Music Tagger: catalog facts
Kid3	Classical Music Tagger
Free Free and open source. Hosting, hardware and any external services are separate.	Free Free and open source under GPL-3.0-only.
Windows, macOS, Linux, Android	Android
Supports multiple audio tag formats Can rename files using tag information	Supports classical music fields such as works and conductors Can run standalone with a file browser
Tagging changes metadata rather than repairing the audio itself.	Android only Focused on classical music metadata
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0-only
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 October 8, 2026

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