Software that federates via ActivityPub

free and open-source federated social networking project

PeerTube is a free and open-source, decentralized, ActivityPub federated video platform. It can use peer-to-peer technology to reduce load on individual servers when videos get popular.

self-hosted link aggregator software and decentralised server network within the Fediverse

ActivityPub is a protocol and open standard for decentralized social networking. It provides a client-to-server (C2S) API for creating and modifying content, as well as a federated server-to-server (S2S) protocol for delivering notifications and content to other servers. ActivityPub is the defining standard of the Fediverse, a decentralised social network of various social interaction models, and content types, which consists of independently managed instances of software such as Mastodon, Pixelfed and PeerTube, among others.

Pixelfed is a free and open-source image sharing social network service. The platform uses a decentralized architecture which is roughly comparable to e-mail providers, meaning user data is not stored on one central server. It uses the ActivityPub protocol, allowing users to interact with other social networks within the protocol, such as Mastodon, PeerTube, and Friendica. Pixelfed and other platforms utilizing this protocol are considered to be part of the Fediverse.

Flipboard is a news aggregator and social network aggregation company based in Palo Alto, California, with offices in New York, Vancouver, and Beijing. Its software, also known as Flipboard, was first released in July 2010. It aggregates content from social media, news feeds, photo sharing sites, and other websites, presents it in magazine format, and allows users to "flip" through the articles, images, and videos being shared. Readers can also save stories into Flipboard magazines. As of March 2016 the company claims there have been 28 million magazines created by users on Flipboard. The serv

free and open source software microblogging server

Friendica (formerly Friendika, originally Mistpark) is a free and open-source software distributed social network. It forms one part of the Fediverse, an interconnected and decentralized network of independently operated servers.

free and open-source federated social networking service

Mobilizon is an open source software for event planning and group management, launched in October 2020 by Framasoft to offer a free alternative to the platforms of GAFAM (Facebook, Meetup.com, EventBrite). Mobilizon gained much visibility in hacker circles relatively fast, and then spread to the wider cultural scene in Europe and more recently in the mainstream IT media.

Misskey () is an open source, federated, social networking service created in 2014 by Japanese software engineer Eiji "syuilo" Shinoda. Misskey uses the ActivityPub protocol for federation, allowing users to interact between independent Misskey instances, and other ActivityPub compatible platforms. Misskey is generally considered to be part of the Fediverse.