A tag editor (or tagger) is a piece of software that supports editing metadata of multimedia file formats, rather than the actual file content.
TagScanner is a multifunction program for organizing and managing your music collection.
Mp3tag is a powerful and yet easy-to-use tool to edit metadata of common audio formats where it supports ID3v1, ID3v2.3, ID3v2.4, iTunes MP4, WMA, Vorbis Comments and APE Tags.
MusicBrainz Picard adopts a different way of updating tags via its online database.
Extremely simple to use, and still has more features than any other tagging application. Automatic tagging, renaming, organizing, manual tagging, and adapting your organisation to YOUR needs with powerful scripts, playback, support of MP3/Ogg/FLAC/WMA.
Auto tag of lyrics and cover arts from internet, auto tag from file names, organize and rename files, case conversion, remove tags, execute scripts, etc.
AudioShell is a freeware MS Windows Explorer shell extension plugin which allows you to view and edit music files id3 tag directly in Windows Explorer.