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Mp3tag vs NTag: catalog facts
Mp3tag	NTag
Freemium The Windows version is free and donation-supported. Mp3tag for Mac is a separate paid…	Free Free and open source under the GPL-3.0.
Windows, macOS	Windows, Linux
Batch editing of ID3v1, ID3v2.3, ID3v2.4, MP4, WMA, APEv2 tags and Vorbis Comments across many files at once Online lookups from Discogs, MusicBrainz and freedb, including cover art	Batch editing across many files Supports MP3, M4A, M4B, FLAC, OGG and WMA
Closed source The macOS version costs money after a 7-day trial; only the Windows version is free	Fewer automation features than larger taggers Small project with a modest user base
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked October 1, 2026

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