Mixed in Key - Mixed In Key is award-winning DJ software that gives you the #1 technique of the world's best...
TuneUp - TuneUp makes your music fresh and clean!
beaTunes - Smart software for library management, music analysis, and playlist creation. For Windows and macOS.
MusicBrainz Picard - Official website for MusicBrainz Picard, a cross-platform music tagger written in Python.Downloads · MusicBrainz Blog · Picard 2.
Tunebat - A browser based song key and bpm database. Supplies compatible songs for harmonic mixing.
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.