Audio Tag Editor
View and edit DICOM tags (Windows & Mac & Linux)
Graphical editor software for many Boss and Roland effect & synth unit
Free professional video converter Windows|Mac|Linux
it's a video player, also works for music and pictures
Music score editor
Free yourself
free cross-platform music creation software
Very Powerfull Crossplatform Qt Based Music Note Editor[Still Planing]
A GUI foundation for creating U/I based content
Music player with a customizable widget