Exiv2 - Exiv2 is a C++ library and a command line utility to manage image metadata.
Metadata++ - Homepage of Metadata++, free, intuitive and powerful EXIF, IPTC, XMP, ICC, GPS viewer/editor.
PhotoME - PhotoME is a powerful tool to show and edit the meta data of image files.
Exif Pilot - Exif Pilot is a Free EXIF Editor that allows you to manipulate META data within image files.
AnalogExif - Metadata editor for the scanned films and DSC-captured digital images.
Jimpl - Free online photo metadata and EXIF data viewer. Uncover hidden data of your pictures. Upload a photo to find where, when, and how it was taken.