beaTunes - Smart software for library management, music analysis, and playlist creation. For Windows and macOS.
SoundMate - Enjoy SoundCloud from your Mac's menu bar
KeyFinder - Key estimation software for DJs
Tangerine - A beautiful full-screen SoundCloud player
foo_bpm - A component for calculating the BPMs (beats per minute) of any tracks in Foobar2000.
NOISESUPPLY - Pandora for SoundCloud