nomacs - nomacs is a free, open source image viewer, which supports mu
ImageGlass - You can use Image to view your digital images and photos of many different formats.
Mirage - Mirage is a fast and simple GTK+ image viewer.
Universal Viewer - Universal Viewer is an advanced file viewer for wide range of formats. Supported file formats are:
GPicView - GPicView is a simple and fast image viewer with low memory usage.
Phiewer - Image Viewer - Phiewer is the easiest and fastest way to view your images, videos and even audio files.