SageThumbs - SageThumbs is a powerful shell extension allowing to preview enormous amount of image formats...
Icaros - Icaros is a collection of lightweight, high quality, Windows Shell Extensions
ThumbView - ThumbView enables image thumbnails and tooltips in Microsoft Windows XP Explorer (does not work on...
FastPreview - FastPreview was created in need of a usable ...
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!
Media Preview - Fed up with Windows Explorer not always showing thumbnails for all of your media files?