FFView is described as 'Features include fast prefetching, smooth panning, voice commands, 2-page mode, a magnifying lens, the ability to browse pictures inside archives (.rar/.cbr, .zip/.cbz/, .pdf) and sticky per-picture options. It reads EXIF tags and is scriptable' and is an app in the News & Books category. There are more than 10 alternatives to FFView for a variety of platforms, including Windows, Mac, Linux, Android and iPhone. The best alternative is ImageGlass, which is both free and Open Source. Other great apps like FFView are FastStone Image Viewer (Free Personal), JPEGView (Free, Open Source), HoneyView (Free) and YACReader (Free, Open Source).
ImageGlass is a simple picture viewer with which you will be able to display your image collection in a very similar way to the one that Windows provides by default, but with some additional functions.
FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor. It has a nice array of features that include image viewing, management, comparison, red-eye removal, emailing, resizing, cropping and color adjustments.
HoneyView is a fast image viewer that supports archived image files for comics/manga/photos. Its design is light and the interface skin can be changed. You can set HoneyView as your default image viewer and also add a shell context menu.
YACReader (Yet Another Comic Reader) is a free cross-platform comic reader with support for multiple comic files and image formats. YACReader comes with YACReaderLibrary an application for browsing and managing your comic collections with various smooth transition effects.
gThumb is an image viewer and browser for the GNOME Desktop. Features Image Viewer * View single images (including GIF animations). Supported image types are: BMP, JPEG, GIF, PNG, TIFF, ICO, XPM. * View EXIF data attached to JPEG images.
MComix is an user-friendly, customizable image viewer. It is specifically designed to handle comic books, but also serves as a generic viewer. It reads images in ZIP, RAR, 7Zip or tar archives as well as plain image files.
GonVisor is a viewer of pictures, comics, magazines, books, images in electronic format. Created to view image sequences, fitting them to the proper size, and to create and open cbr/cbz/cba/zip/rar/ace files of images.