Flickr - image and video hosting website
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.
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
Photoscape - high quality photo editing software, that enables you to fix and enhance photos.
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.
Polarr - MacOS, Windows, iOS, Android and online photo editing tools & free photo editors.