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!
qDslrDashboard - Camera tethering as easy as 123!
IrfanView - IrfanView ... one of the most popular viewers worldwide.
digiCamControl - A DSLR camera remote control open source software Features:
FastStone Image Viewer - FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.
Entangle - Entangle provides a graphical interface for “tethered shooting”, aka taking photographs with a...
JPEGView - JPEGView is a small and fast viewer/editor for JPEG, BMP, PNG, GIF and TIFF images.