Tune Sweeper - Show duplicates in your Music library. Automatically select which duplicates to keep and delete based on your preferences. Remove duplicates with one-click from your iTunes or Music app library.
beaTunes - Smart software for library management, music analysis, and playlist creation. For Windows and macOS.
TuneUp - TuneUp makes your music fresh and clean!
MPFreaker - Imagine a program that automatically fills in the missing information in your music library...
MusicBrainz Picard - Official website for MusicBrainz Picard, a cross-platform music tagger written in Python.Downloads · MusicBrainz Blog · Picard 2.
SongGenie - SongGenie analyzes, identifies and repairs your mp3 tags and names.