mat2 - mat2 is a metadata removal tool, supporting a wide range of commonly used file formats.
Metadata++ - Homepage of Metadata++, free, intuitive and powerful EXIF, IPTC, XMP, ICC, GPS viewer/editor.
GroupDocs.Metadata for .NET - GroupDocs.Metadata for .
PhotoME - PhotoME is a powerful tool to show and edit the meta data of image files.
Attribute Magic - AttributeMagic.com - utility to change file timestamps and metadata
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.