GTK+ comic book viewer.
small console GML or graphviz DOT graph viewer
LazView Image viewer
Tool for manual ranking of images and videos
Dialog box to edit Exif comment into images
Nik plugins on Ubuntu standalone or with Picasa3
picture viewer
Simple drawing program for Linux
Sheet music reader, for hands-free musical performing.
interactive 2D plotter
A simple image viewer for all platforms!
Image viewer
An Image Viewer that currently perform basic image viewing operation
mhsetroot needed to run gmhsetroot - its on sourceforge too
A keyboard-friendly image viewer in Gtk2-perl