Search fast huge image collections even for content, with Photology
If you have a really huge collection of pictures and you are afraid even to think about searching for an image, you would find Photology useful.
The program is not developed anymore, but you can use instead Darktable.
Darktable lets you search search your image collections by tags, image rating (stars), color labels and many more, use flexible database queries on all metadata of your images.
It supports a variety of standard, raw and high dynamic range image formats (e.g. JPEG, CR2, NEF, HDR, PFM, RAF … ).
