KeyFinder - Key estimation software for DJs
Mixed in Key - Mixed In Key is award-winning DJ software that gives you the #1 technique of the world's best...
Tunebat - A browser based song key and bpm database. Supplies compatible songs for harmonic mixing.
MixMeister BPM Analyzer - MixMeister BPM Analyzer is a free program you can use to automatically detect the exact BPM (beats...
foo_bpm - A component for calculating the BPMs (beats per minute) of any tracks in Foobar2000.
BPM Counter - Fast and accurate beats per minute detector for MP3 music.