ImageGlass - You can use Image to view your digital images and photos of many different formats.
ThumbView - ThumbView enables image thumbnails and tooltips in Microsoft Windows XP Explorer (does not work on...
IrfanView - IrfanView ... one of the most popular viewers worldwide.
MysticThumbs - MysticThumbs generates thumbnails of many image types not natively supported by Windows.
Phiewer - Image Viewer - Phiewer is the easiest and fastest way to view your images, videos and even audio files.
Icaros - Icaros is a collection of lightweight, high quality, Windows Shell Extensions