Ahoy! I've casually collected wallpapers for a few years and have somehow acquired around 6500 papes. I had just been using Windows' built in manager, but I swear I see some of them appear before all of them have cycled through (I don't have duplicates, have checked that). Can anyone with a large collection recommend a good manager that would choose randomly from a directory, but not show a pape again until all have been shown? There's a load on Google but I'd love some experienced input.

And because I have to work on a Sunday, I'm going to use a random file selector and load a bunch of random papes on here as a thanks for any response!