pyExifToolGui is a graphical frontend for command line tool ExifTool. This is a python pySide QT4 script program that reads and writes all kind of metadata tags from/to image files. A strong point of this software is the ability to write the data, copied or not from a source image (reference image), to multiple images at once.
-Extensive renaming options based on metadata in your photos.
-Supports all formats exiftool itself supports in "read" mode. Preview thumbnails for standard image formats and most raw formats.
-Writes GPS data to (selected) images.
-Comes with geotagging functionality
-Writes several exif and xmp tags to images.
-Removes metadata (if you want that).
-Supports new Google Photosphere (gpano) functionality (with exiftool >= 9.07)
-Modify datetime tags
-Modify image file dates based on datetime tags.
-Options for exporting (all) tag categories to a series of export options
-A tab where you can execute your own commands in case they are not directly supported by the Gui functionality