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Mp3tag vs eyeD3: catalog facts
Mp3tag	eyeD3
Freemium The Windows version is free and donation-supported. Mp3tag for Mac is a separate paid…	Free Free to use under the GPL-3.0 license.
Windows, macOS	Command line
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	Reads and edits ID3v1 and ID3v2.3 and 2.4 tags Reports MP3 playback and encoding details
Closed source The macOS version costs money after a 7-day trial; only the Windows version is free	Works with MP3 files rather than a broad range of audio formats Requires Python 3.9 or later
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked October 8, 2026

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