I've got a lot of external hard drives and want to go through them and remove any duplicate files.
I would like like any recommendations of such a program that any of you have used please.
Free or that can be bought
Sometimes I have found up to a dozen identical files or pics on the same drive as every so often I save the files on my main drive to external drives

Clicky

And another from computer active web site Clicky

glary utilities - its free and has high ratings . so many cool features on it too for cleaning , repairs and optimization . essential & easy to use .

put next to cc cleaner and auslogics defrag .

all great & free