The Alias Plugin lets you define command aliases, much like git, and also makes available any beet-prefixed commands in your PATH as well.

The Import Inspect Plugin lets you inspect the metadata changes to be applied when importing.

The Modify On Import Plugin lets you define metadata changes to occur on import when the specified queries match.

The Replace Format Plugin defines format functions for search/replace of text, both single replacements and applications of a set of replacements like the built in replace configuration option.

The Saved Formats Plugin lets you define saved, named format strings by storing them in fields for later reference.

The Saved Queries Plugin lets you save queries by name for later use.

The musicsource plugin just forces me to define a source field when importing new music, as this is how I organize my library. source is where the music was acquired, e.g. Amazon, iTunes, Google, etc.

The picard plugin lets me launch MusicBrainz Picard with the items I’m importing, either to use it to tag rather than beets, or as an inspection tool to examine its metadata. This assumes a picard beets command exists, as this is how it runs it.

The reimportskipfields plugin lets you specify fields from set_fields to also be applied to skipped items on reimport. I use this to facilitate resuming from a reimport, as it lets me apply a reimported field to anything I tried to reimport, whether I was able to match it to a candidate or not.

The abcalc plugin performs the same calculation as absubmit, but runs it only against non-MusicBrainz tracks, and stores the low level values rather than submitting them. I’ve used this to populate the acoustic fingerprint tags for use by external de-duplication scripts.

The advisory plugin sets advisory and albumadvisory flexible fields, on import, based on the itunesadvisory tag in the files.

The existingqueries plugin adds a couple queries that originated in the beets source.

The hasart plugin adds a query to check for embedded album art.

The inconsistentalbumtracks plugin identifies albums whose tracks have inconsistent album fields.

The inlinehook plugin lets you define hooks inline in config.yaml with python, much the way inline does for fields.

The last_import plugin keeps track of the most recently imported items with a flexible field.

The modifytmpl plugin lets you define fields using templates / format strings. This will be going upstream into the main modify command.

The nowrite plugin blocks writes/moves of items in the library, which is particularly useful in testing beets or testing changes to beets without mucking up your existing library.

The otherqueries plugin defines other random queries of questionable usefulness at this time.

The crossquery plugin lets you query albums/items whose items/album match a sub-query.

The spotifyexplicit plugin uses the spotify plugin to look up items from my library, determines if Spotify considers these items as explicit tracks (Parental Advisory), and prints them if so. I use this to set an advisory field on my tracks.

The zeroalbum plugin clears fields in albums in the database, obeying the ‘zero’ plugin configuration.