A keyboard-driven app for tagging and organizing large numbers of photos efficiently.
Metapho is intended as a lightweight, flexible way of organizing large numbers of photos. It uses text files, not a proprietary database, so you're not locked down to one app or a proprietary database, and you can view your tags databases at any time, or edit them in a text editor if you should ever want to.
Metapho can be driven entirely from the keyboard: you should be able to do everything you need without moving your hands to the mouse, though you can use the mouse if you find that easier.
It depends on PyGTK, but not on gnome or any other desktop services.
It includes a program called "notags" that you can run to examine the current directory recursively and tell you about files and directories that still need to be tagged. Run it at the root of an image directory that might have untagged subdirectories.
Metapho is available on PyPi,
so you can install it as
pip install metapho.
Read the Metapho Documentation for more information on both the app and the API of the classes inside it.