ActivityPub is an open standard protocol for decentralized social networking, which allows different social networking services to interoperate with each other. The protocol is designed to provide a secure and decentralized method for individuals to connect and communicate with each other without the influence or control of any central authority.
At its core, ActivityPub is a protocol for exchanging activities or actions, which represent things that happen within social networks – such as posting a status update, sharing a photo or commenting on a post. These activities can be shared among different social networks, allowing users to interact with their friends and contacts across different platforms.
The protocol operates by using unique identifiers for each user and post, which allow different services to track and display activities in a consistent manner. When a user performs an action on one social network, such as posting a message, that activity is then shared with other social networks via the ActivityPub protocol.
One of the key advantages of ActivityPub is that it enables decentralization of social networking. Users can join different networks and communicate with each other in a seamless, secure and privacy-preserving way, without relying on any central entity. This opens up new possibilities for collaboration, free expression, and innovation in the social networking space.
ActivityPub is an open, decentralized social networking protocol based on Pump.io’s ActivityPump protocol. It is an official W3C recommended standard published by the W3C Social Web Working Group. The standard was co-authored by Evan Prodromou, creator of StatusNet (now known as GNU social). The W3C Social Community Group organizes a yearly free conference called ActivityPub Conf about the future of ActivityPub.
Notable implementations of the federated (server-to-server) protocol include Friendica, social networking software; implemented ActivityPub in version 2019.01, Libervia (in beta as of 2022), and Mastodon, social networking software; implemented ActivityPub in version 1.6. The ActivityPub protocol has been shaped by the careful input of many members in the W3C Social Working Group.
ActivityPub is a revolutionary protocol that enables decentralized social networking. It provides a secure and privacy-preserving way for users to connect and communicate with each other across different platforms, without relying on any central authority. As the importance of decentralization and privacy is becoming increasingly recognized in the tech industry, ActivityPub is expected to play an important role in the future of social networking.
ActivityPub is seen by some as a technology that could help rewire the entire social fabric of the internet. It is a technology through which social networks can be made interoperable, connecting everything to a single social graph and content-sharing system. It is governed by open protocols, not closed platforms.