Mixed in Key - Mixed In Key is award-winning DJ software that gives you the #1 technique of the world's best...
piZap - Free online photo editing software.
Tunebat - A browser based song key and bpm database. Supplies compatible songs for harmonic mixing.
Photoshop.com - Photoshop.
KeyFinder - Key estimation software for DJs
Fun Photo Box - FunPhotoBox is a free photo editing device where you can make clever pictures from your photographs.