darktable is an open source photography workflow application
A simple multi-platfom 2D Animation Software for all ages!
JaxoDraw: Feynman Diagrams made easy!
A web interface to create custom vector-based visualizations
CAD application for Technical Drawing exercises
Vector drawing program for LaTeX using PSTricks
Simple and intuitive 2D vector drawing for electronics and not only.
A graphical Finite State Machine (FSM) designer.
Font editor
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
Business graphics diagramming application + customizable shape lib.
Create and edit SVG graphics directly in ownCloud. Based on svg-edit.