Metadatics is not available for Windows but there are plenty of alternatives that runs on Windows with similar functionality. The best Windows alternative is MusicBrainz Picard, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Metadatics and many of them are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to Metadatics are Mp3tag (Free), TagScanner (Free), Kid3 (Free, Open Source) and TuneUp (Paid).
Jaikoz is a tagger that specializes in mass tagging of music file tags. Jaikoz performs acoustic fingerprint matching and metadata lookups automatically using the MusicBrainz, Discogs and Acoustid databases. It can also look up artwork and find duplicates songs.
AudioShell is a freeware MS Windows Explorer shell extension plug-in which allows you to view and edit ID3 metadata tags directly in Windows Explorer. It supports all files and tags standards supported by Tag&Rename - mp3 tag editor.