Mirage is described as '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' and is a Image Viewer in the Photos & Graphics category. There are more than 25 alternatives to Mirage for a variety of platforms, including Windows, Linux, Mac, Xfce and PortableApps.com. Most alternatives are Image Viewers and Image Editors. The best alternative is IrfanView. It's not free, so if you're looking for a free alternative, you could try nomacs or ImageGlass. Other great apps like Mirage are XnView (Free Personal), JPEGView (Free, Open Source), Preview (Free) and QuickViewer (Free, Open Source).
nomacs is a small, fast image viewer able to handle the most common image formats including RAW images. Additionally it is possible to synchronize multiple viewers. A synchronization of viewers running on the same computer or via LAN is possible.
ImageGlass is a simple picture viewer with which you will be able to display your image collection in a very similar way to the one that Windows provides by default, but with some additional functions.
QuickViewer is a graphic image viewer for comfortable browsing of many images. This software performs reading of image data in advance. And drawing the imported image data on the screen with OpenGL. You can browse images with much smoother response than ever before.
PhotoQt is a simple, yet powerful and good looking image viewer, written in Qt, published as open-source, and completely free. Photo comes with a variety of features. Most features you would expect from a image viewer should be there.
You can use the Photos app to view or edit photos and videos in your Pictures library and on OneDrive, and to import photos and videos. The Photos app includes a wide range of editing options to enhance your photos, from automatic fixes to advanced adjustments.