Wallpaper Control is a non-window manager-specific wallpaper manager for the X Window System. It aims to be a full featured utility for managing and setting your images you use as wallpaper. Features include a preview window, directory listing, and deletion of graphics from hard drive.
Web Photo Album automatically generates photo albums on the fly from directories containing your favorite photos. Supports captions (including HTML tags), definable page sizes, forward and reverse preview, and index pages. All preview and index pages can be clicked to jump straight to the page that contains them. Album maintenance is easy -- just add or remove photos and (optionally) captions to your album directory.
Xpdf is a viewer for Portable Document Format (PDF) files. (These are also sometimes also called 'Acrobat' files, from the name of Adobe's PDF software.) The Xpdf project also includes a PDF text extractor, PDF-to-PostScript converter, and various other utilities. It runs under the X Window System on UNIX, VMS, and OS/2. The non-X components (pdftops, pdftotext, etc.) also run on Win32 systems, and should run on pretty much any system with a decent C++ compiler. Xpdf is designed to be small and efficient. It can use Type 1 and TrueType fonts.
Xtheater is a media playing tool for Unix. It has a flexible plugin architecture to allow for different UI and playback plugins. It has a plugin for a GTK UI, an smpeg-based plugin for playing mpg and mp3 files, and an AVI plugin for AVI and ASF files. It features seek, fullscreen, doublesize, GL rendering, and more.