I organize my pictures using a folder structure on an external hard drive. Every time I import new pictures from my camera, I move this pictures in these folders manually. This process is tedious, and in many cases, I have duplicate pictures in different folders.
I would like to know if there is any open-source software which would allow me to import pictures from my camera, skipping images that are already in my folder structure.
In the past, I used Apple iPhoto, which did a great job in that sense, but now I am looking for a suitable alternative.