Pictus - Pictus is a fast, free image viewer that enables Windows to see thumbnails of supported formats, such as PSD. Give it a spin today!
MysticThumbs - MysticThumbs generates thumbnails of many image types not natively supported by Windows.
SageThumbs - SageThumbs is a powerful shell extension allowing to preview enormous amount of image formats...
ThumbView - ThumbView enables image thumbnails and tooltips in Microsoft Windows XP Explorer (does not work on...
Context Viewer - Context Viewer is an explorer extension in the form of a Control Panel applet that lets you preview...
Icaros - Icaros is a collection of lightweight, high quality, Windows Shell Extensions