camera.app
darktable
digikam
eog
f-spot
gliv
gpicview
gpixpod
gqview
gthumb
gtkam
gwenview
kflickr
kphotoalbum
luciole
phatch
photoprint
picasa
pix
postr
qiv
qtpfsgui
rawstudio
ristretto
shotwell
showfoto
ufraw