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.
Flickr - image and video hosting website
Windows Live Photo Gallery - Get help and how-to info for Windows Essentials—including Windows Live Mail, Movie Maker, and more.
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
IrfanView - IrfanView ... one of the most popular viewers worldwide.
PhotoPrism.app - PhotoPrism® is an AI-Powered Photos App for the Decentralized Web. It makes use of the latest technologies to tag and find pictures automatically without getting in your way. You can run it at home, on a private server, or in the cloud.