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!
Pearl - Transform your photos into narrated storytelling videos
IrfanView - IrfanView ... one of the most popular viewers worldwide.
The Product Management guide - A book on how to create and ship products that people love
FastStone Image Viewer - FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.
ContinuSys - ContinuSys Integrated Business Management System (IBMS) is a suite of cloud-based integrated apps that help manage all parts of your business efficiently.
JPEGView - JPEGView is a small and fast viewer/editor for JPEG, BMP, PNG, GIF and TIFF images.