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.
ImageGlass - You can use Image to view your digital images and photos of many different formats.
Pic2Map - Can't remember the location where you took that picture on your vacation? Upload your photo and find out where it was taken.
Phiewer - Image Viewer - Phiewer is the easiest and fastest way to view your images, videos and even audio files.
Metadata++ - Homepage of Metadata++, free, intuitive and powerful EXIF, IPTC, XMP, ICC, GPS viewer/editor.
IrfanView - IrfanView ... one of the most popular viewers worldwide.