/Favorites - Slick player for Soundcloud favorites
beaTunes - Smart software for library management, music analysis, and playlist creation. For Windows and macOS.
DaftCloud - DaftCloud is a free and wonderful designed SoundCloud App for macOS.
KeyFinder - Key estimation software for DJs
Hermes - Pandora Client for OS X
foo_bpm - A component for calculating the BPMs (beats per minute) of any tracks in Foobar2000.