darktable is an open source photography workflow application
Model Railway CAD program
converts PostScript or PDF files to other vector graphics formats
A simple multi-platfom 2D Animation Software for all ages!
Guitare rosette design
Cross Platform GUI Toolkit
Former project page
Extensible vector graphics editor with Latex text support.
A graphical Finite State Machine (FSM) designer.
Jade is a cross-platform diagram editor built on the Qt framework.
Free drawing software for Windows, Mac OS X, and Linux
Interactive designer for Celtic knots
Not your usual Architectural Modeler
Output Processing script from Java AWT/Swing paint call
A powerful C++ class library for image manipulation