Free / Open Source :
1. Inkscape (Available on Windows and Linux) - download it here : http://www.inkscape.org/download/
2. GIMP (Linux) - download it here : http://www.gimp.org/downloads/
3. Photoscape (Windows) - download it here http://www.photoscape.org/ps/main/download.php
4. DIA (Available on Windows, Mac OS and Linux)
5. Blender 3D (Available on Windows and Linux), see : www.blender.org
Commercial :
1. Adobe Illustrator (Windows) - information get here : http://www.adobe.com/downloads/
2. Corel Draw (Windows)
3. Macromedia Freehand (Windows)
4. 3D Max
