Mixed in Key - Mixed In Key is award-winning DJ software that gives you the #1 technique of the world's best...
Sononym - Finally, a sample browser that understands audio
Tunebat - A browser based song key and bpm database. Supplies compatible songs for harmonic mixing.
Samplism - Feature-packed, audio asset manager for Mac.
KeyFinder - Key estimation software for DJs
Soundly - Functional music for better sleep, focus and relaxation