17 alternatives to your default image viewer on Fedora
6 Lightweight Qt Image Viewers for Linux
Was looking for an alternative image viewer and found these neat articles.
I tried out Nomacs and Photoqt and am quite impressed with both. The information on how to set up and use photoqt is very impressive indeed and well worth a peek.
http://photoqt.org/about
The above is from the photoqt home page and impressed the pants of me.