Spectro - Spectro is a freeware audio file analyzer for windows.
Hum - Songwriting for iPhone
Lossless Audio Checker - A utility to check whether an audio file is truly lossless or not.
Songcraft.io - A platform for songwriters to write, organize & collaborate.
sndpeek - a real-time audio visualization tool (animated, 3D)
Horucco - Horucco is an cloud based app for musicians, songwriters, producers of every skill levelExplore chords and discover related chords on the fly.