Looking for a backup program for my photo collection. I would like to be able to see which photos that have been added and, more importantly, which have been deleted since the last backup. This is to make sure that I haven't deleted any photos by accident. Preferably it should be possible to see thumbnails of the photos or at least open them from the application, rather than just presenting a list of filenames.
I'm sure this would be possible to achieve using a diff tool like meld followed up by rsync, but it would be convenient if there was ONE application for it, preferably with a nice graphical interface.
Preferably runs on Windows 7, but Windows 10 or Arch linux would do to.