Free image viewer software for linux

Cornice is a cross-platform image viewer written in Python + wxPython + PIL. It doesnt pretend to be complete, fast, or even useful, but I like it and it is the viewer I use on both Linux and Windows. It has been inspired by the famous Windows-only ACDSee.
Why did I write it? Well, because I like ACDSee, but its not free and it doesnt run on Linux, which is my main platform. There already exists an ACDsee-like viewer, GTKSee, but it is unmaintained and it lacks some features I wanted (bookmarks, a good keyboard navigation and zooming).
First I tried to add such features to it, but then I decided to rewrite it from scratch, so that I could use it also on windows (and also because I had some troubles, especially when trying to port GTKSee to the gdk_pixbuf lib, and also because Python is more fun than C, and...
Main features:
- Fully cross-platform: it should run wherever wxPython does;
- Detail and thumbnail view for images;
- Image preview;
- Automatic recognition of images, with a variety of formats supported;
- Bookmarks;
- Full-screen view;
- Zooming and rotation;
- Slideshow;
- Good keyboard navigation (still not perfect, but this is true for all the features ;-);
- Image loading from zip archives;
- i18n support (with Italian and French translations available);
- EXIF data support;
- Some more...

Preview is a simple image viewer for GNUstep. It is designed to be easy to use and support GNUstep features such as image design, pasteboard/services, printing, and layout.

ThinkFree Viewer allows you to view ThinkFree or Microsoft Office word processing, spreadsheet, and presentation files without having any other office applications installed. After installing the appropriate Widget simply drag and drop files from your desktop, or copy and paste the Web URL into the ThinkFree Widget.

ThinkFree Widgets allows users to open email attachments with ease, and supports the following file formats: .doc, .rtf, .txt, .xls, .csv, .ppt, and .pps.

While Digikam is a great app for managing your images, it lacks a good and fast image viewer in my opinion. Unfortunately, the fastest image viewer for KDE, Kuickshow, is not available as KIPI plugin. Therefore I wrote this plugin to fill that gap
Main features:
- works as KIPI plugin
- fast image loading (about as fast as kuickshow)
- fast zooming/panning (faster than kuickshow)

Ekspos is platform independent Java image viewer program. Ekspos Image Viewer support most popular image format: PNG, JPEG, and GIF, where additional image format can be added through Java ImageIO plugin.
It consists of 2 parts: shell browser and viewer. Shell browser allows you to navigate your image collection and youll be able to browse images in tree, detail, list, icon and thumbnail view. The viewer provide progressive view of images with zoom and pan capability.
Main features:
- Image Format (Default): JPEG, PNG, and GIF
- Support ImageIO plugin for additional Image Format
- Support 4 views: detail, list, icon, and thumbnail
- Thumbnail caching for fast preview
- Written entirely in Java

Quick Image Viewer (qiv) is a very small and fast GDK/Imlib image viewer designed to replace the classic image viewers like xv or xloadimage. Quick Image Viewer program runs on FreeBSD, Linux (libc5/glibc), Solaris (SunOS) and HP-UX.
Main features:
- moving & zooming image in fullscreen mode.
- setting image as x11 background (centered,tiled,stretched..) with user settable background color
- fullscreen viewing with a great statusbar
- external "qiv-command" program support
- screensaver mode
- brightness/contrast/gamma correction
- real transparency
- maxpect (zoom to screen size while preserving aspect ratio)
- scale_down (scale down to big images to fit screen size)
- slideshow (with random order if you want)
- filename filer
- flip horizontal/vertical, rotate left/right
- delete function (move to .qiv-trash/)
- jump to image number x, jump forward/backward x images
Enhancements:
- This release has some bugfixes and new options.

GLiv is an OpenGL image viewer, image loading is done via Gdk-pixbuf bundled with GTK+-2.4, rendering with OpenGL and the graphical user interface uses GTK+ with GtkGLExt.

GLiv is very fast and smooth at rotating, panning and zooming if you have an OpenGL accelerated graphics board. GLiv supports thumbnails and navigating through them using two images menus.