I also checked your viewers. I can see two main categories for them:
(A) One for large image collection visualization and creation.
(B) for a quick image view in a given directory.
pornivew and GQview are in A category. pornview is very promising (I like the idea to add plugins but there are none installed then I can´t know quality of them), it has good features but seems inestable now (nobody talked about them, but I had some GUI problems testing it ), although I can see videos with pornivew this app always crashed after play some
![Evil or Very Mad :evil:](./images/smilies/icon_evil.gif)
GpicView and Viewnoir are small viewers and are in the same B category, I like GpicView over Viewnoir because it has more features, I can use it to quickly save images in different image formats, it is slight faster than Viewnoir, I could navigate between images without problems and I also liked the full screen controls. With your recent post, Now I Must try the sideshow feature that make it a clear winner in this category
I know there are many other viewers that are more capable and could be included in another categories for image edition, transformation, etc. but for the present options I think we must add one for each category, GpicView and GQview.