Image Tagger

Image Tagger is a simple Swing based graphical wrapper around the excellent ExifTool. It allows you to set the Title, Comments, and Keywords. You can select multiple images at once, and batch set all desired tags for them.

Note that this is not an image library program (like iPhoto or Picassa). Its only use is to tag images, prior to processing by other software. This is specifically for my workflow, which goes as follows:

1. Download from camera to Library/Incoming directory.
2. Run Image Tagger to assign keywords based on people in the picture, location, etc.
3. Run my processing script to move pictures to a folder Library/yyyy/mm/Location
4. Search for pictures based on the OS's metadata search abilities (in my case, Spotlight, but there is similar software available in other operating systems too).