XnView MP stands for Multi Platform = it is available for Windows, Linux and MacOS. It is a continuation of the older XnView Classic. In my opinion it is a great alternative to Windows photos app or any Linux image viewer that comes preinstalled. I even think it is an alternative to IrfanView. It is really fast and simple to use, supports more than 500 image formats, has built in folder browser, image converter, editor... AND MORE!
FilterPixel - Save Time While We Cull Your Photos FilterPixel saves time for photographers that they can spend with their family or to scale their business.
IrfanView - IrfanView ... one of the most popular viewers worldwide.
Adobe Bridge - Download Adobe Bridge CC digital asset management software when you get started with Adobe Creative Cloud. Start your free trial today.
FastStone Image Viewer - FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.
Photo Mechanic - Image browser and workflow accelerator.
JPEGView - JPEGView is a small and fast viewer/editor for JPEG, BMP, PNG, GIF and TIFF images.