Read, write and edit metadata
Perl library and command-line application for reading, writing and editing meta information (EXIF, IPTC, XMP, and more) in a wide variety of file formats (JPEG, TIFF, PNG, PDF, RAW, and more).
A Lightroom3 Plugin that compares the development parameters of two different pictures. A comparison between selected picture and a reference preset is possible, too. Similarities are not shown by design.