[Gorgor]

Have you looked at DigiKam? It offers directories, tagging (with custom tag hierarchies), deduplication and also face recognition. I think it can do quite a bit more, but I'm not a heavy user, at all. I just use it for keeping track of my modest library and it works great for that.

[mberning]

I will check it out

[wolfhumble]

Another (paid) solution is Imageranger.com (don't have anything to do with them, but installed it for my father). I really like the import function that gets rid of duplicates (dedupes) and that put files into directories (video, photos, etc) and year/months based on how you have set up the import function.

The image viewing interface itself is okay although it might not be as smooth as e.g. Apple Photo (which I feel has its own challenges with how convoluted its image directories are e.g). ImageRanger has also tags and Face Detection and Recognition.

I have only installed the Home edition, and it seems to re-index the images to create thumbnails (relatively fast) if you have stored images on an external disk that is detached/attached between openings of the program. From what I understand, the Professional version does not have this issue as the images are cached (not tested out this myself). I don't think the face Detection and Recognition is on par with e.g. Apple Photo, but haven't tested it extensively enough to say that with 100% certainty.

What I like most about ImageRanger is its import functions and the way it stores the images in common folders and subfolders based on preferences and not in a convoluted DB.