Draw vector graphics to scale using a descriptive language
A ZX Spectrum UDG creator
Cross Platform GUI Toolkit
Just a simple flat design vector based character designer.
Free yourself
Advanced image processing toolbox for Scilab on Unix/Linux/Mac OS
Free drawing software for Windows, Mac OS X, and Linux
Hand Written Equation Creator
Modification of the graphics program GIMP to replicate Photoshop feel
Open Source CAD