ViewIt is a fast and easy to use image viewer that supports most popular image formats, including JPEG, TIFF, PNG, PSD, raw, dng, and more. Important features include a unique, intuitive interface, fullscreen mode, quick image sorting, printing, digital camera support, and EXIF tags. It currently includes plugins to convert file formats, create Web pages, create Finder previews, lose less JPEG transformations, support shell scripts, rename images sequentially, create contact sheets, and email images.
Active Image Viewer is an image viewer that provides a very efficient way to display multiple images within a small area. Thumbnails are automatically generated and displayed (removing the need to create smaller versions of images). When a visitor clicks a thumbnail, the full size image is displayed within the current page. Each full size image may have a link attached to it which can be set to either open in the current browser window or a new window.