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eyeD3 vs NTag: catalog facts
eyeD3	NTag
Free Free to use under the GPL-3.0 license.	Free Free and open source under the GPL-3.0.
Command line	Windows, Linux
Reads and edits ID3v1 and ID3v2.3 and 2.4 tags Reports MP3 playback and encoding details	Batch editing across many files Supports MP3, M4A, M4B, FLAC, OGG and WMA
Works with MP3 files rather than a broad range of audio formats Requires Python 3.9 or later	Fewer automation features than larger taggers Small project with a modest user base
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 1, 2026

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