Ex Falso is a standalone audio metadata editor for Mac that gives you surgical control over the tags embedded in your music files — from basic artist and album fields to obscure TXXX frames and cover art.
What is Ex Falso?
Ex Falso is the tag-editing half of the Quod Libet music player project, spun out as its own dedicated application so you can fix your library's metadata without ever touching a playback interface. It handles virtually every format you throw at it — MP3, FLAC, Ogg Vorbis, OPUS, MP4, WMA, and more — and exposes every tag field each format supports, not just the handful most editors bother to show.
I started using it after years of wrestling with incomplete album art and inconsistently capitalised artist names. What hooked me immediately was the ability to edit multiple files at once in a clean tabular view, where shared tags auto-fill and diverging values are flagged clearly rather than silently overwritten.
What does Ex Falso do best?
Ex Falso excels at bulk, precision metadata surgery — the kind of work where a mouse-heavy GUI editor like MusicBrainz Picard gets tedious and a one-shot script feels too blunt.
- Multi-file batch editing: select an entire album, an artist folder, or an arbitrary cross-genre selection and edit shared tags in one pass. Fields that differ across the selection show a placeholder so you never accidentally homogenise what should stay unique.
- Raw tag access: every frame, every custom field. If you care about REPLAYGAIN_TRACK_GAIN, MUSICBRAINZ_TRACKID, or your own private TXXX tag, Ex Falso shows it — and lets you edit or delete it.
- Embedded artwork: drag a replacement image onto the art pane and it embeds cleanly, respecting format-specific cover-art conventions rather than jamming a JPEG in wherever it fits.
- Pattern-based renaming: a simple tag-to-filename templating system means you can clean up a folder of track01.mp3 files in seconds once the tags are right.
Compared to alternatives like Kid3 or the tagging pane inside Swinsian, Ex Falso feels more like a spreadsheet than a form — which is exactly what a power user fixing 800 ripped CDs wants.
Is Ex Falso free?
Yes — Ex Falso is free and open-source software, released under the GNU General Public License. You can install it via Homebrew Cask (brew install --cask ex-falso) at no cost, and the project is actively maintained on GitHub as part of the broader Quod Libet ecosystem.
There is no Pro tier, no nag screen, and no telemetry. The trade-off is that UI polish lags behind commercial tools — this is a project built by and for people who prioritise capability over aesthetics.
Who should use Ex Falso?
Ex Falso is the right tool if you maintain a locally-stored music library you actually care about — ripped CDs, purchased FLACs, vinyl rips, or a carefully curated collection that pre-dates streaming. It rewards the kind of listener who notices when a compilation is mis-attributed or an album's track numbers skip from 9 to 11.
It is less suited to casual users who just want to change a song title in Apple Music's info panel, or anyone whose library lives entirely in Spotify. If you are primarily using macOS's native Music app and only occasionally need a tag fix, the built-in Get Info dialog is probably enough. But if you are running a Plex server, a Navidrome instance, or a Beets pipeline, Ex Falso earns a permanent spot in your toolkit.
How does Ex Falso compare to Kid3?
Kid3 is the closest direct competitor — also free, also cross-platform, also format-agnostic. Kid3 has a more polished Qt interface and ships native Apple Silicon binaries, which gives it a slight edge on modern Macs. Ex Falso counters with deeper Vorbis comment support (natural for its FLAC-heavy Quod Libet heritage) and a more discoverable raw-tag view.
MusicBrainz Picard is a different category entirely: it identifies your files acoustically and pulls metadata from the MusicBrainz database automatically, which is magic for untagged rips but overkill when your tags are 90% correct and you just need to fix them. I use Picard for initial identification and Ex Falso for the cleanup pass — they complement each other rather than compete.
beets (CLI) is more powerful still but requires comfort on the command line. Ex Falso is the GUI bridge for users who want precision without writing Python.
What are the best Ex Falso alternatives?
The honest short list for Mac users:
- Kid3 — polished native GUI, strong Apple Silicon support, solid choice if Ex Falso's GTK aesthetic bothers you.
- MusicBrainz Picard — automatic acoustic fingerprinting and bulk lookup; best for tagging from scratch.
- beets — CLI-first, infinitely extensible via plugins, steeper learning curve but unmatched automation.
- Metadatics — commercial Mac-native option with a clean SwiftUI feel; worth the small price if you want a Mac-idiomatic experience.
