Microsoft Photos is described as 'You can use the Photos app to view or edit photos and videos in your Pictures library and on OneDrive, and to import photos and videos. The Photos app includes a wide range of editing options to enhance your photos, from automatic fixes to advanced adjustments' and is a Image Viewer in the photos & graphics category. There are more than 100 alternatives to Microsoft Photos for a variety of platforms, including Windows, Mac, Linux, Flathub and Android apps. The best Microsoft Photos alternative is IrfanView. It's not free, so if you're looking for a free alternative, you could try IrfanView or ImageGlass. Other great apps like Microsoft Photos are XnView MP, nomacs, qView and FastStone Image Viewer.