Mastodon is an open-source, ActivityPub-compatible social network server for microblogging, offering federated timelines, moderation tools, media support, and APIs.

50.3k stars7.5k forksAGPL-3.0last commit Actively maintained
Pleroma is an open-source ActivityPub server for federated social networks. It enables hosting microblogging instances with user accounts, timelines, federation with other servers, moderation tools, and configurable frontends.
Mastodon is an open-source, ActivityPub-compatible social network server for microblogging, offering federated timelines, moderation tools, media support, and APIs.

50.3k stars7.5k forksAGPL-3.0last commit Actively maintained
Open-source federated social network built around independently run pods, privacy via Aspects, and standard social features; implemented in Ruby on Rails.

13.7k stars2.9k forksAGPL-3.0last commit Actively maintained
Misskey is an open-source federated microblogging platform using ActivityPub, enabling communities to run their own social server and interact across the fediverse.

11.3k stars1.6k forksAGPL-3.0last commit Actively maintained
Ech0 is a lightweight open-source, self-hosted federated publishing platform (ActivityPub) with a Vue-based UI, SQLite storage, Docker deployment and built-in Markdown editor.

2.1k stars158 forksAGPL-3.0last commit Actively maintained
Friendica is a decentralized, federated social network server that connects to the Fediverse, offering posts, profiles, events, photos, and strong privacy controls.

1.7k stars377 forksAGPL-3.0last commit Actively maintained
Hyphanet (formerly Freenet) is a peer-to-peer platform for censorship-resistant communication and publishing using an encrypted, decentralized data store and plugin-based apps.

1.2k stars237 forksGPL-2.0last commit Actively maintained
Self-hosted, federated catalog and social tracker for books, movies, TV, music, podcasts, games, and performances with ratings, reviews, lists, and ActivityPub.

875 stars66 forksAGPL-3.0last commit Actively maintained
Adds ActivityPub federation to Nextcloud so users can post, follow, and interact with the fediverse while keeping content on their Nextcloud instance.
498 stars58 forksAGPL-3.0last commit Actively maintained
Headless federated microblogging server for single users that implements ActivityPub and Mastodon-compatible REST APIs for use with Mastodon clients.

486 stars57 forksAGPL-3.0last commit Actively maintained
Lightweight single-user ActivityPub server using SQLite; supports rich text, Markdown, images, polls, threading, translations and MCP.
437 stars22 forksAGPL-3.0last commit Actively maintained
Hatsu is a self-hosted ActivityPub bridge that automates federation for static sites by mapping site users and posts to Fediverse actors, handling follows, posts, and replies via feeds.

258 stars7 forksAGPL-3.0last commit Actively maintained
Lightweight federated social network served over the Gemini protocol; implements ActivityPub, stores data in a single SQLite file, and is written in Go.
203 stars7 forksApache-2.0last commit Actively maintained
Akkoma is an Elixir/Phoenix fork of Pleroma implementing ActivityPub, with Misskey-flavored markdown, custom emoji reactions, multiple frontends and performance improvements.

Activity unknown
Lightweight ActivityPub social network server focused on privacy, safety, and customization, with Mastodon API compatibility for many existing clients.

Activity unknown
Lightweight ActivityPub microblogging platform with Mastodon-compatible API, rich post interactions, and optional paid subscriptions via Monero.

Activity unknown
Open-source, minimal ActivityPub server in portable C — multiuser, Mastodon-API compatible, no database required, JavaScript-free web UI for small federated instances.

Activity unknown
Iceshrimp.NET is a performant, maintainable ActivityPub federated social network server with a Blazor WebAssembly frontend and a Mastodon-compatible API.

Activity unknown
Socialhome is a federated, self-hosted social network engine enabling decentralized user profiles and cross-network federation via ActivityPub.

Activity unknown
Yarn.social is a decentralized, self-hosted social network based on the Twtxt format, offering privacy-first microblogging with web and CLI clients and a pod-based model.

Activity unknown
Noosfero is a web platform for building community portals and social networks, combining CMS features with profiles, groups, and collaborative publishing.
Activity unknown
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 12 of 20 shipped a commit in the last six months. Licences in this list: AGPL-3.0, GPL-2.0, Apache-2.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in Federated Social Networks.