Universal Viewer is an advanced file viewer for wide range of formats. Developed by UVViewSoft
License: Freemium
Apps available for Windows
Mirage is a fast and simple GTK+ image viewer. Because it depends only on PyGTK, Mirage is ideal for users who wish to keep their computers lean while still having a clean image viewer. Developed by Fredric
License: Open Source
Apps available for Linux Xfce Discontinued