ncurses based mpd client with vi like key bindings
Interactive designer for Celtic knots
Hand Written Equation Creator
Adobe Flash SWF file reader, editor
Symmetric Sprite Editor
Helping to transcribe scanned old documents
Managana is a free cross-platform software for digital publication.
Pear3DEngine is a modern and modular 3D development framework
KPEdit - A 2D skeletal animation editor.
Video and Image Analysis Extension for Firefox
Yet another video editor
N-Dimensional sparse array, editor, and browser in (x)emacs lisp.
MIDI multi track song writing in an ASCII editor!
Very Powerfull Crossplatform Qt Based Music Note Editor[Still Planing]