Facebook - Connect with friends, family and other people you know. Share photos and videos, send messages and get updates.
wisaw - What I Saw Today (cool things) -- Minimalistic Anonymous Photo Sharing
X (Twitter) - Connect with your friends and other fascinating people. Get in-the-moment updates on the things that interest you. And watch events unfold, in real time, from every angle.
Szoter - Szoter is easy to use, free, online image annotation tool. Annotate, draw and highlight any image.
Mastodon - Mastodon is a decentralized, open source social network. This is just one part of the network, run by the main developers of the project It is not focused on any particular niche interest - everyone is welcome!
WallaMe - Hide messages in the real world using augmented reality