A PDF Reader and Note-taker for OS X
Toolkit for working with and mapping geospatial data
View Sixel images in Windows, and Sixel image repository
fast, minimal, portable image browser
Free, ad-free image viewer with PDF & PSD support. Made in S.Korea
Photo Organizer
A Windows-based viewer currently supporting CDR & 2D DXF files
eGPXviewer is a 3D GPX track viewer
A cross-platform XML/CSS based eBook reader
view any data file as an image, sound images etc..
Simple viewer app for most Booru Sites, coded in Qt C++
Scripts to make emacs, pdfsync and xpdf work together.
C# fully live user configurable chart control
3D File format viewer/explorer
A tool for managing digital photos.
Toolset for LVF lossless video format
Open source software for processing XTF files
osGraphX is a 3D file viewer based on openscenegraph.