KeepSafe - Keep your entire photo library safely stored in an encrypted private cloud.
Flickr - image and video hosting website
AppLock (FOSS) - A privacy App lock FOSS application.
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
Hexlock - Security app locker keeps apps private with smart profiles for any situation
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.