IrfanView - IrfanView ... one of the most popular viewers worldwide.
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.
XnView MP - XnView is a free software that allows you to view, resize and edit your images. It supports more than 500 different formats!
sxiv - Simple X Image Viewer. Contribute to muennich/sxiv development by creating an account on GitHub.
FastStone Image Viewer - FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.