Audio Tag Editor
Shotcut is a free, open source, cross-platform video 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
LDraw™ editor for LEGO® style digital building instructions.
Generate Harmonious Colors Freely.
it's a video player, also works for music and pictures
show and edit eulumdat files
GOP-based video editor (remuxer)
Music score editor
Free yourself
Extensible vector graphics editor with Latex text support.
Easy creation of normal maps
Jade is a cross-platform diagram editor built on the Qt framework.
Interactive designer for Celtic knots
SWF editor with support for action script.