SageThumbs is a free Windows shell extension that adds image preview capabilities to Windows Explorer. It adds thumbnail previews for many image formats including JPEG, GIF, BMP, PNG, TIFF, TGA, and many others. It also includes a customizable image preview window that can be used to quickly view images and apply basic editing operations such as cropping or resizing. Additionally, SageThumbs supports media files such as AVI, MP3, and WMA. It is a great tool for quickly viewing and editing images without having to launch a full-fledged image editor.
Discontinued The product is no longer available on the official website, but you can still download it from OldVersion.com.
I've found MysticThumbs to be a great success in generating thumbnails for file formats that Windows doesn't natively support. What I value most is its smooth combination with Explorer, the fact that it doesn't lock drives when I eject them, and its helpful tray icon that indicates when it is working on new thumbnails. Because of its usefulness and reliability I am a happy customer!
Discontinued The official website is no longer available, but the latest version, 1.41, can still be downloaded from Wayback Machine.
Discontinued No updates have been released since version 1.0 was released on December 2, 2004.
Discontinued Last release date: September 7, 2005. See http://free.firmtools.com/shellextension.php
no .psd, .ora or .sai thumbnails