Mastodon is a free, open-source social network server based on ActivityPub where users can follow friends and discover new ones. On Mastodon, users can publish anything they want: links, pictures, text, video. All Mastodon servers are interoperable as a federated network (users on one server can seamlessly communicate with users from another one, including non-Mastodon software that implements ActivityPub)!

A privacy-respecting, hackable metasearch engine.

PeerTube is an experimental decentralized federated video platform system that uses peer-to-peer technology to reduce load on individual servers.