Tag That Photo - Your Photos in Your Control by Tag That Photo Software. Face Recognition, Privacy, Tagging and more.
Flickr - image and video hosting website
digiKam - Professional Photo Management with the Power of Open Source
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
Pixelmator - Pixelmator is an image-editing application for Mac and iPad.
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.