Related:
3,
art, GUI,
image,
toon
Minara.sf.net >>Minara is a programmable graphics program editor. Think of it as "Emacs for graphics", an environment for working with vector graphics that can be customised and extended from the ground up. Images are stored as Lisp files which are loaded into buffers in the program's memory. There they are edited as plain text by tools and scripts, executed as drawing instructions by the program's GUI, or executed as picking commands by the selection system.
GraphicAll.org >>building for you
GraphicsMagick.org >>GraphicsMagick is dististributed under a MIT-style License, which is approved by the Open Source Initiative and is compatible with the GPL. GraphicsMagick is originally derived from ImageMagick 5.5.2.
SciGraphica.sf.net >>SciGraphica is a scientific application for data analysis and technical graphics. It pretends to be a clone of the popular commercial (and expensive) application "Microcal Origin".
SFML.sf.net >>SFML is a portable and easy to use multimedia API written in C++. You can see it as a modern, object-oriented alternative to SDL.
FLTK.org
OpenGL
SDL