OpenDocument Viewer
Cross-platform viewer for ODF files. Download, FAQ, and development status.
http://opendocumentfellowship.com/odfviewer

Image Viewer by Optmossis
Graal Online, Graal Classic, Image Viewer, Graal Image Viewer, Graal Online, Graal Classic, Image Viewer, Graal Image Viewer
http://optmossis.gq.nu/

Lynx Viewer
Delorie online viewer enables you to view your site in a text browser.
http://www.delorie.com/web/lynxview.html

Afinion Project-Viewer
Consulting for Microsoft Project und ProjectManagement. Viewer for Microsoft Project, SAP PS and Excel. Introduction of Project Server 2007
http://www.afinion.de/english/

jProf Viewer
Viewer for the old files created by the old java profiler (-prof). [Open source, LGPL]
http://jprofviewer.sourceforge.net/

AD Picture Viewer
Simple but powerful digital photo and image viewer and editor
http://www.abroaddesign.com/picview/

xMDB Viewer
open source Ajax viewer for XML movie databases
http://w3net.eu/xmdb/

AMPSoft.net
AMPsoft is a site in which you can find freeware utilities like AMP Font Viewer, AMP WinOFF, MediaMenu or Cookie Monster and games like Continental
http://www.ampsoft.net

The Rapid Earthquake Viewer - University of South Carolina
A seismogram viewer for recent earthquakes using global seismic stations.
http://rev.seis.sc.edu/

LDAP Schema Viewer
Information about the viewer by AK BK Home. Includes details of its current status, common questions, and object classes.
http://ldap.akbkhome.com/