XnView is a fast multi-format graphics browser, viewer, and converter. It reads more than 400 file formats. Its main features are batch conversion, image processing with many filters and effects, slide shows, twain support, and foto galleries on CD.
Downloads: 64790 - Freeware - Download Now

STDU Viewer is a document viewer for multiple file formats. The goal of this software is to replace the multiple document viewers with a single simple application. STDU Viewer supports following document formats: DjVu, TIFF, PDF.
Downloads: 72766 - Freeware - Download Now

ACDSee 7 PowerPack is the essential photo management package for professionals and enthusiasts, Find, organize, edit, print and share your pictures instantly, easier than ever-and with better results. No other photo software saves you so much time.
Downloads: 94002 - Shareware - Download Now

ACDSee Mobile for Windows CE is Pocket PC software that enables you to carry your favorite digital photos on your Pocket PC. You can use this image viewer to beam your images to other PDA users that have the ACDSee Mobile for Windows CE shareware.
Downloads: 76420 - Shareware - Download Now

UniView is a powerful image viewer,converter and manipulation tool. It supports 50+ popular image formats. Moreover, it can also encrypt/decrypt images, batch convert and rename image files, control animated graphics, and make html albums on the fly.
Downloads: 93425 - Shareware - Download Now