Celemony
Antares - Auto-Tune
Typedrummer
DeaDBeeF - SourceForge
Quod Libet
Audacious - An davanced audio player
Strawberry Music Player
Amadeus - Hairersoft
Cakewalk by BandLab
WaveShop
Radium - music editor
AudioMass
Dark Audacity
Doninn
Wavosaur
NCH - Audio
ocenaudio
Logic Pro | Apple
Adobe Audition
BandLab - Make Music Online
Jazz Studies
Cymascope,Cymatics, Apps, Music, Art
Flat.io
TuxGuitar · SourceForge
Rosegarden music
alphaTab - Build modern music notation apps for web, desktop and mobile
Source-code: https://github.com/CoderLine/alphaTab
Go PlayAlong
GuitarLayers
Music21
Aria Maestosa