







The gossip and replication server for Secure Scuttlebutt - a distributed social network
Secure Scuttlebutt
Secure Scuttlebutt (SSB) is a peer-to peer communication protocol, mesh network, and self-hosted social media ecosystem.[3][4] Each user hosts their own content and the content of the peers they follow, which provides fault tolerance and eventual consistency.[5] Messages are digitally signed and added to an append-only list of messages published by an author.[6] SSB is primarily used for implementing distributed social networks, and utilizes cryptography to assure that content remains unforged as it is propagated through the network.[7][8]
Secure Scuttlebutt Consortium
A distributed and secure peer to peer social network - Secure Scuttlebutt Consortium
SocialWeb.Network - Your Gateway to Decentralized Social
Comprehensive resources for decentralized social web protocols including ActivityPub, AT Protocol, Nostr, and more.

Mathieu Lefebvre — Product Designer
For several months now, I have been passionate about decentralized social networks. A federated social network is a platform composed of independent servers that communicate with each other using common protocols.
NextGraph - Decentralized, encrypted and local-first platform and framework, towards the better internet we all deserve!
Features a social network, shared documents, productivity tools, an app store, and more! You can use NextGraph for free : resilient, secure, private and encrypted. You own your data and software! Developers can build new web3.0 local-first apps with our open source framework, based on open standards, with CRDTs, E2EE, Linked Data, JSON, Markdown...

Willow - Willow’25
Peer-to-peer protocols which scale up, down, and sideways. Sychronisable data storage, fine-grained access control, private and efficient synchronisation, and secure data delivery by any means possible.
neodb-social/neodb
🧩 a self-hosted server tracking what you read/watch/listen/play, powering a global distributed community federating via ActivityPub and ATProto.
feeds.social — Minimalist Bluesky Client
Bluesky and the AT Protocol: Usable Decentralized Social Media
Bluesky is a new social network built upon the AT Protocol, a decentralized foundation for public social media. It was launched in private beta in February 2023, and has grown to over 10 million registered users by October 2024. In this paper we introduce the architecture of Bluesky and the AT Protocol, and explain how the technical design of Bluesky is informed by our goals: to enable decentralization by having multiple interoperable providers for every part of the system; to make it easy for users to switch providers; to give users agency over the content they see; and to provide a simple user experience that does not burden users with complexity arising from the system's decentralized nature. The system's openness allows anybody to contribute to content moderation and community management, and we invite the research community to use Bluesky as a dataset and testing ground for new approaches in social media moderation.

ATOM: AT Protocol Over MoQ Transport
This document specifies how the Authenticated Transfer (AT) Protocol can leverage Media over QUIC Transport (MOQT) for efficient data synchronization across decentralized social networks. The AT Protocol's firehose event stream and repository synchronization mechanisms map naturally to MOQT's publish/subscribe model, enabling scalable relay infrastructure, priority-based delivery, and improved resilience for large-scale social data distribution. This specification addresses the challenges of the current WebSocket- based transport and demonstrates how MOQT's relay architecture, group-based caching, and multiplexed streams provide significant benefits for AT Protocol deployments at scale.
Pirate Social — A Distributed Social Network
Pirate Social is a distributed social network connecting Bluesky, RSS, and YouTube, hosted on your own free website with integrated CMS.

The Heart of Spritely: Distributed Objects and Capability Security
This paper is the second in a three-part series outlining Spritely's thinking and design. The first paper, Spritely: New Foundations for Networked Communities, explains the problems which face contemporary social network design. This paper details the core technical toolbox provided by Spritely Goblins and how it supplies the necessary features to feasibly build out Spritely's broader vision. The third paper in the series, Spritely for Secure Applications and Communities, ties the first two papers together by showing how the architecture for user-facing software fulfills the vision of the first paper and can be built on top of ideas from this paper.


ActivityPub
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.