From Cerious Software:
ThumbsPlus is an application that makes it easy to find and maintain graphics, clip art, fonts, and animation files. By displaying a small image--or thumbnail--of each file, ThumbsPlus lets you browse, view, edit, and crop images quickly and easily. The program will also let you launch external editors, copy images to the clipboard, drag and drop graphics files between directories, create a slide show from selected graphics, install bitmap files as Windows wallpaper, use DDE commands to control ThumbsPlus from other programs, and more. ThumbsPlus supports a variety of file formats, including Kodak DCS and DC120 (KDC), Microsoft Image Composer (MIC), PNG, Silicon Graphics (RGB), Seattle Filmworks (SFW), and Minolta RD-175 (MDC). Version 3.3 adds support for over 80 formats, has added support for animated GIF looping, automatic generation of thumbnails from the first FLI/FLC frame, view-window panning, searching by filename, and instant viewing of color and gamma adjustments, along with a number of other enhancements.