Viewer and exporter for Unreal Engine 1-4 assets (UE Viewer).

A lightweight, easy-to-use, and efficient library for processing and rendering 3D data (C++ & Python)

An efficient graphical Minecraft seed finder and map viewer.

DJV is an open source application for playback and review of image sequences

MultiVNC is a cross-platform Multicast-enabled VNC viewer based on LibVNCClient. The desktop client runs on Unix, Mac OS X and Windows. There also is an Android client.

A image/comic viewer application for Windows, Mac and Linux, it can show images very fast

OpenGL Viewer (OBJ PMD PMX)

Bachelor thesis project. A DICOM Viewer written in C++, QT and VTK.

Dual-Screen PDF Viewer for latex-beamer

Cross platform 3D renderer in C++ and OpenGL with lighting, shadows and materials.

This is a tool for Linux kernel ftrace and perf events visualization

PE32 (x86) and PE32+ (x64) binaries analysis tool, resources viewer/extractor.

Starviewer, a cross-platform open source medical imaging software

xCHM is a cross-platform GPL frontend for CHMLIB (http://www.jedrea.com/chmlib/) written with the wxWidgets framework.

Image viewer for image processing experts

Simple viewer for OpenEXR files with detailed metadata display

Flattened Device Tree Viewer written in Qt.

Cyan Graphics

JPEGView-Static Absolute Image Viewer for Windows supports nearly ALL image file formats, including too old and too new ones, so it is called Absolute.

Efficient Large-Scale Point-Cloud Viewer based on OpenGL