Photoscape - high quality photo editing software, that enables you to fix and enhance photos.
Amazon Photos - Prime Photos From Amazon is a mobile application that lets you to backup, organize and share all of the photos and videos from your mobile device, computer and other devices.
IrfanView - IrfanView ... one of the most popular viewers worldwide.
Google Photos - All your photos are backed up safely, organized and labeled automatically, so you can find them fast, and share them how you like.
JPEGView - JPEGView is a small and fast viewer/editor for JPEG, BMP, PNG, GIF and TIFF images.
ACDSee - ACDSee is an image viewer that uses very little system resources, and it has a small, sleek size that won't take up much space on your system.