Sociall (Beta) - A secure and private decentralised social network for all.
Flickr - image and video hosting website
Manyverse - A social network off the grid
Imgur - Imgur is a free and simple image hosting service with image editing feature. Signup is optional.
data.world - The social network for data people
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.