Graphics & Pictures

3d Rendering

• Blender Portable - 3D modelling, animation, rendering, post-production, playback

Diagramming

• Dia Portable - full-featured diagramming tool

Image Editors

• GIMP Portable - Photo and Image Editor
• IcoFX Portable (Freeware) - full-featured icon editor

Image Viewers

• Cornice Portable - image viewer with slideshow