Fedi.builders

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Aardwolf

Facebook-like social network connecting communities across the web

Written in Rust language.

Licensed under AGPL-3.0.

Activity.next

A single actor ActivityPub server implemented in NextJS.

Written in Typescript language.

Licensed under MIT.

Akkoma

A community-driven fork of Pleroma with new features such as support for Misskey-flavored Markdown.

Written in Elixir language.

Licensed under AGPL-3.0.

Bonfire Social

Your plug & play federated social network. Tend to your digital life in community.

Written in Elixir language.

Licensed under AGPL-3.0.

Bugle

(, ) A minimal ActivityPub server built with Laravel.

Written in PHP language.

Licensed under Unknown.

Convene

Secure, affordable, private digital spaces for work and play.

Written in Ruby language.

Licensed under PPL-3.0.

Decodon

A fork of Mastodon focusing on followers-only posting of media. Configurable circles to post to.

Written in Ruby language.

Licensed under AGPL-3.0.

Ecko

A fork of Mastodon to optimize toward community, that is making it as easy as possible to contribute.

Written in Ruby language.

Licensed under AGPL-3.0.

Emissary

A customizable, private space in the Fediverse where people can create, share, and collaborate.

Written in Go language.

Licensed under AGPL-3.0.

Enigmatick

Social networking platform (under development).

Written in Rust language.

Licensed under GPL-3.0.

Epicyon

ActivityPub server implementing S2S and C2S protocols, suitable for single board computers. Includes features such as moderation tools, post expiry, content warnings, and image descriptions

Written in Python language.

Licensed under AGPL-3.0.

Firefish

An actively developed, community-driven fork of Misskey with many quality of life improvements for users and admins alike

Written in TypeScript language.

Licensed under AGPL-3.0.

FlockingBird

social network for professionals (WIP)

Written in unknown language.

Licensed under .

FoundKey

A fork of Misskey with various bugfixes and improvements.

Written in TypeScript language.

Licensed under AGPL-3.0.

Friendica

Personal network that helps to keep in contact with friends. Interface and functionality include common features of a mainstream social network

Written in PHP language.

Licensed under AGPL-3.0.

GNU social

Microblogging server with multiple plugins

Written in PHP language.

Licensed under AGPL-3.0.

Goldfish Social

Alternative for Vine / TikTok (alpha). ActivityPub will come later!

Written in PHP language.

Licensed under AGPL-3.0.

groundpolis

A microblogging service forked from Misskey

Written in TypeScript language.

Licensed under AGPL-3.0.

Glitch-soc

A friendly fork of Mastodon, with the aim of providing additional features at the risk of potentially less stable software

Written in Ruby language.

Licensed under AGPL-3.0.

GoToSocial

A headless Mastodon-compatible Fediverse server project, written in Golang.

Written in Go language.

Licensed under AGPL-3.0.

Hometown

A fork of Mastodon that provides local posting and a wider range of content types

Written in Ruby language.

Licensed under AGPL-3.0.

Honk

ActivityPub server with minimal setup and support costs

Written in Go language.

Licensed under ISC.

Iceshrimp

A Misskey fork with a focus on community needs, bugfixes, QoL and performance

Written in TypeScript language.

Licensed under AGPL-3.0.

illuminant

An ActivityPub server with an NNTP interface.

Written in Haskell language.

Licensed under GPL-2.0.

im@stodon

A fork of Mastodon. Unlisted posts with tags are published on tags, a list of fav tags, image size restrictions and transcoding

Written in Ruby language.

Licensed under AGPL-3.0.

Kanzaki

A Mastodon-compatible, ActivityPub-speaking server in OCaml

Written in OCaml language.

Licensed under AGPL-3.0.

Kepi

A Django-based microblogging server, written in Python, which supports the Mastodon protocol.

Written in Python language.

Licensed under GPL-2.0.

Kibou

Lightweight social networking server that implements Mastodon's REST API.

Written in Rust language.

Licensed under AGPL-3.0.

Kitsune

An ActivityPub-speaking microblogging service.

Written in Clojure language.

Licensed under AGPL-3.0.

Kitsune

ActivityPub-federated microblogging.

Written in Rust language.

Licensed under MIT.

kmyblue

A fork of Mastodon for creators: emoji reactions, localposting, groups, misskey-like antennas, post self-destruction and more moderation options

Written in Ruby language.

Licensed under AGPL-3.0.

Ktistec

A single-user ActivityPub server with minimal dependencies, using SQLite,

Written in Crystal language.

Licensed under AGPL-3.0.

Kroeg

Generic ActivityPub server, with a focus on microblogging style activities

Written in Rust language.

Licensed under Unknown.

lectrn

A social network for humans that is free, decentralized, open, and easy to use.

Written in JavaScript language.

Licensed under AGPL-3.0.

Letterbook

A Mastodon-compatible microblogging server, optimized to reduce administrative costs and burdens.

Written in C# language.

Licensed under AGPL-3.0.

Little Forest

A fork of Mastodon with full Markdown, Quote and Local-Only Toots, Gitlab/hub sign-in, Google Translate, deeper support of Chinese and more theming.

Written in Ruby language.

Licensed under AGPL-3.0.

Magnetar

A social networking server anyone can self-host.

Written in Rust language.

Licensed under AGPL-3.0.

mammoth

A federated social media platform implementing the ActivityPub specification for client/server and server/server communications.

Written in TypeScript language.

Licensed under AGPL-3.0.

Mastodon

Epic microblogging network with many features and multiple interface layouts to choose from

Written in Ruby language.

Licensed under AGPL-3.0.

Mathtodon

A fork of Mastodon where you can post toots with beautiful mathematical formulae in TeX/LaTeX style

Written in Ruby language.

Licensed under AGPL-3.0.

MatticNote

ActivityPub compatible SNS that aims to be easy for everyone to use.

Written in Go language.

Licensed under AGPL-3.0.

Mbin

A federated content aggregator, voting, discussion and microblogging platform. Fork of Kbin.

Written in PHP language.

Licensed under AGPL-3.0.

microblog.pub

Self-hosted, single-user, ActivityPub powered microblog.

Written in Python language.

Licensed under AGPL-3.0.

microstatus

Lightweight Mastodon and GNU Social-compatible server implementation

Written in Rust language.

Licensed under ISC.

Misskey

Interplanetary microblogging platform. Provides many additional features like calendar, emoji reactions, polls, games, and many other widgets

Written in JavaScript language.

Licensed under AGPL-3.0.

netop

An ActivityPub Server in Scala.

Written in Scala language.

Licensed under MIT.

OCamlot

An ActivityPub server written in OCaml.

Written in OCaml language.

Licensed under AGPL-3.0.

Personal Reader for Drupal

A personal reader on your website which is installable as a PWA on your phone or tablet.

Written in PHP language.

Licensed under GPL-2.0.

Pinetta

) - A decentralized, federated social pinboard in the style of Pinterest. (In development, see

Written in Python language.

Licensed under AGPL-3.0.

Pleroma

Microblogging platform

Written in Elixir language.

Licensed under AGPL-3.0.

Pothole

A lightweight federated microblogging server, designed to be simple & fast.

Written in Nim language.

Licensed under AGPL-3.0-or-later.

pub

A tiny ActivityPub host intended for a single actor, that implements Mastodon API for use with various clients.

Written in Go language.

Licensed under BSD3-Clause.

Pubblr

A federated blogging platform built on the ActivityPub protocol.

Written in Go language.

Licensed under MIT.

pubgate

Lightweight ActivityPub CMS. Implements both client-to-server (C2S) and server-to-server(S2S) APIs. Compatible with Mastodon, Pixelfed, Pleroma and microblog.pub.

Written in Python language.

Licensed under BSD-3-clause.

pump.io

Still considers adding ActivityPub.

Written in unknown language.

Licensed under .

Rebased

Fediverse backend written in Elixir (fork of ). Compatible with the Mastodon API. The recommended backend for , also supports as a frontend.

Written in unknown language.

Licensed under .

Ruffy

A fork of Glitchsoc, with a changed layout and focus on readability and rich content

Written in Ruby language.

Licensed under AGPL-3.0.

Rustodon

Mastodon-compatible server

Written in Rust language.

Licensed under AGPL-3.0.

Scuttlebutt

currently working on a bridge between SSB and AP networks.

Written in unknown language.

Licensed under .

Seppo

A server-side, single-user, Fediverse-integrated microblog engine. Creating static assets published by webserver.

Written in OCaml language.

Licensed under GPL-3.0.

Sharkey

A Sharkish microblogging platform.

Written in Typescript language.

Licensed under AGPL-3.0.

Shuttlecraft

A single user ActivityPub server to interact with the Fediverse and other indie web protocols like RSS.

Written in Javascript language.

Licensed under MIT.

Smalltown

A fork of Mastodon designed for civic communities looking to run their own social networks.

Written in Ruby language.

Licensed under AGPL-3.0.

Smithereen

VKontakte-like social network, with friends, walls, photo albums and groups

Written in Java language.

Licensed under Unlicense.

snac

A simple, minimalistic ActivityPub instance with minimal dependencies, multiuser, no database nor cookies needed, totally JavaScript-free

Written in C language.

Licensed under MIT.

Socialhome

Personal webpage with social networking functionality

Written in Python language.

Licensed under AGPL-3.0.

Spritely

Research space for a next-gen distributed social network written in Racket and consisting of multiple projects, by AP specification co-author Christine Lemmer Webber.

Written in Racket language.

Licensed under Apache-2.0.

Streams

Public domain federated communications server. Provides a feature rich ActivityPub and Nomad communication node.

Written in PHP language.

Licensed under Public domain and others.

Swanye

A tumblelog in the style of Tumblr.

Written in Elixir language.

Licensed under AGPL-3.0.

Takahē

An experimental Fediverse server for microblogging

Written in Python language.

Licensed under BSD-3-clause.

Tapir

A small, efficient Mastodon-compatible Fediverse server for single-user instances. Based on Deno. (Note: )

Written in Typescript language.

Licensed under Blue Oak.

Tavern

A minimalistic Activity Pub server. Think Mastodon, but smaller and with fewer features

Written in Go language.

Licensed under MIT.

Tootik

A federated nanoblogging service with a Gemini frontend.

Written in Go language.

Licensed under Apache-2.0.

Vagabond

A federated social network built with security and privacy in mind.

Written in Python language.

Licensed under GPL-3.0.

Wafrn

Small Tumbl-inspired social network.

Written in Typescript language.

Licensed under Apache-2.0.

Yarn

A decentralised self-hosted microblogging platform that has a privacy-first focus.

Written in Go language.

Licensed under AGPL-3.0.

Dinolog

Utterly simplified and lightweight blogging protocol. (AP support planned. See )

Written in Go language.

Licensed under Unknown.

Dokie.li

Article authoring and formating

Written in JavaScript language.

Licensed under Apache-2.0.

GoBlog

Simple blogging system written in Go

Written in Go language.

Licensed under MIT.

Hubzilla

CMS with a range of groupware tools available as plug-ins

Written in PHP language.

Licensed under MIT.

Known

A collaborative social publishing engine (Working on AP support, see ).

Written in PHP language.

Licensed under Apache-2.0.

Little Library

A digital give-a-book, take-a-book library for ebooks.

Written in JavaScript language.

Licensed under AGPL-3.0.

Plume

Blogging application

Written in Rust language.

Licensed under AGPL-3.0.

Read.as

Reading app by the devs of WriteFreely

Written in Go language.

Licensed under AGPL-3.0.

site

Minimalist blog that implements ActivityPub endpoints.

Written in Javascript language.

Licensed under MIT.

social.distributed.press

A Social Inbox for Decentralized Publishing and ActivityPub.

Written in Typescript language.

Licensed under AGPL-3.0.

Wordforge

Federated creative writing server. Write novels using markdown.

Written in Rust language.

Licensed under AGPL-3.0.

WordPress

. by @pfefferle@mastodon.social, that allows users on AP apps to follow WP blogs, and comment on them, from an AP app

Written in unknown language.

Licensed under .

WriteFreely

Blog software

Written in Go language.

Licensed under AGPL-3.0.

Yuforium

A federated community platform that focuses on federated communities so they are no longer constrained to a single entity.

Written in TypeScript language.

Licensed under GPL-3.0.

Azorius

A link aggregator and comment site.

Written in Go language.

Licensed under ISC.

Betula

Self-hosted personal link collection manager.

Written in Go language.

Licensed under AGPL-3.0.

brutalinks

Link aggregator inspired by Reddit

Written in Go language.

Licensed under MIT.

ENiGMA½

A modern BBS software with a nostalgic flair. (see: )

Written in Javascript language.

Licensed under BSD-2-Clause.

Flarum

Experimental plugin for forum software by

Written in unknown language.

Licensed under .

Kbin

) - Link aggregator and microblogging platform for Fediverse

Written in PHP language.

Licensed under AGPL-3.0.

Lemmy

Link aggregator, by

Written in Rust language.

Licensed under AGPL-3.0.

Lobste.rs

Existing Reddit replacement adding AP support, AP issue still open

Written in unknown language.

Licensed under .

lotide

A federated forum / link aggregator.

Written in Rust language.

Licensed under AGPL-3.0.

MoonTree

Link aggregator, a work in progress

Written in Typescript language.

Licensed under MIT.

Postmarks

a single-user bookmarking website designed to live on the Fediverse

Written in Javascript language.

Licensed under MIT.

Smilodon

the server by Purism used in LibreOne, not the abandoned Tuxcraft server or Pylodon client; a complementary fork of Mastodon, focusing on opt-in public spaces

Written in Ruby language.

Licensed under AGPL-3.0.

Vicinitude

A social media platform for Local Communities.

Written in Ruby language.

Licensed under MIT.

vxwClub

Simple social groups compatible with ActivityPub.

Written in PHP language.

Licensed under MIT.

Anfora

(formerly Zinat) Image sharing

Written in Python language.

Licensed under AGPL-3.0.

CastoPod Host

An open-source hosting platform made for podcasters who want engage and interact with their audience.

Written in PHP language.

Licensed under AGPL-3.0.

Catcast D

A federated video live streaming platform

Written in TypeScript language.

Licensed under Unknown.

FChannel

A libre, self-hostable, federated, imageboard platform that utilizes ActivityPub.

Written in Go language.

Licensed under AGPL-3.0.

FunkWhale

Music streaming

Written in Python language.

Licensed under AGPL-3.0.

Librecast LIVE

Live Streaming Video Platform with Multicast

Written in JavaScript language.

Licensed under GPL-2.0-only OR GPL-3.0-only.

Minipub

Minimal ActivityPub server for posting federated podcast comments

Written in TypeScript language.

Licensed under MIT.

Owncast

Owncast is a self-hosted live video and web chat server for use with existing popular broadcasting software.

Written in Go language.

Licensed under MIT.

PeerTube

Video-hosting site using WebTorrent

Written in TypeScript language.

Licensed under AGPL-3.0.

PixelFed

Photo Sharing. For Everyone. A free and ethical photo sharing platform.

Written in PHP language.

Licensed under AGPL-3.0.

Podverse

Web app for the Podverse podcast clip sharing system.

Written in TypeScript language.

Licensed under AGPL-3.0.

snap.as

Snap.as is a minimalist tool for publishing and sharing your photos on the web. (Not really started yet)

Written in unknown language.

Licensed under .

Vidzy

The federated alternative to TikTok.

Written in Python language.

Licensed under AGPL-3.0.

Gancio

Shared agenda for local communities; demo

Written in JavaScript language.

Licensed under AGPL-3.0.

Gath

Public events with no registration required, an instance connected with the friend.camp Mastodon instance is up at: http://events.friend.camp

Written in JavaScript language.

Licensed under GPL-3.0.

GetTogether

Still considering adding AP support

Written in unknown language.

Licensed under .

Mobilizon

Aims to be more than a Meetup clone

Written in Elixir language.

Licensed under AGPL-3.0.

The Occasion Octopus

A federated network ofOpen Data for discovering interesting events

Written in PHP language.

Licensed under AGPL-3.0.

events engine that federates events over AP

riendica (see above) has an and is looking to test interop with other AP events apps. are in the works but this .

Written in unknown language.

Licensed under .

Artist Hub

Part of Creative Passport NGI0-funded project for providing a verified digital ID for Music Makers (very early stage of development)

Written in TypeScript language.

Licensed under AGPL-3.0.

NextCloud-Social

Social networking app for NextCloud

Written in PHP language.

Licensed under AGPL-3.0.

MoodleNet

LMS (Learning Management System) aimed at helping teachers collaboratively collate and curate sets of OER (Open Educational Resources)

Written in unknown language.

Licensed under .

bopwiki

An experimental 'microwiki implementation' / 'mini CMS' with ActivityPub support.

Written in Common Lisp language.

Licensed under GPL-3.0.

Chatter Net

Chatter Net is a modern decentralized semantic web built atop self-sovereign identity.

Written in Rust language.

Licensed under MIT.

CPub

a semantic web server, implements a Linked Data Platform (LDP), uses RDF Turtle as serialization format, part of the project

Written in Elixir language.

Licensed under AGPL-3.0.

Inventaire

A libre collaborative resource mapper powered by open-knowledge, starting with books. (Considers AP integration, see )

Written in JavaScript language.

Licensed under AGPL-3.0.

OLKi

A self-hosted linguistic corpora exchange platform that aims to be a simple gateway to the Fediverse for scientific interaction

Written in Python language.

Licensed under AGPL-3.0.

Openki

An interactive p2p web-platform to provide barrier-free access to education for everyone. (not federated yet, see )

Written in JavaScript language.

Licensed under AGPL-3.0.

SemApps

A collaborative, generic knowledge management system. Aims to ease data storage and filtering.

Written in JavaScript language.

Licensed under Apache-2.0.

SkoHub

Creates a publication / subscription infrastructure for Open Educational Resources. It allows to follow specific subjects and to be notified when new content about that subject is published.

Written in JavaScript language.

Licensed under Apache-2.0.

XWiki

An advanced open source Enterprise Wiki (via the ).

Written in Java language.

Licensed under LGPL 2.1.

Bookwyrm

A federated alternative to Goodreads (non-OSS license)

Written in Python language.

Licensed under ANTI-CAPITALIST SOFTWARE LICENSE v1.4.

FediMovies

Lively federated movies reviews platform.

Written in Rust language.

Licensed under AGPL-3.0.

LibRate

Libre media rating website for the Fediverse.

Written in Go language.

Licensed under AGPL-3.0.

Dharma

A federated community-building platform for Eve Online corporations.

Written in Go language.

Licensed under AGPL-3.0.

Guild Website

Federating guild website using GuildWars2 API

Written in Go language.

Licensed under MIT.

castling.club

Challenge someone to a game of chess using toots. An ActivityPub server with a single hardcoded King service actor that acts as a chess arbiter.

Written in TypeScript language.

Licensed under MIT.

Wolfgame

Wolfgame is a lot like Mafia. Once started the game simulates day/night cycle and allows players to vote for who might be a werewolf during the day.

Written in Python language.

Licensed under MIT.

ForgeFlux

API-space software forge federation. Will implement ForgeFed external to the forges, using the forge's HTTP APIs.

Written in Python language.

Licensed under AGPL-3.0.

ForgeFriends

An online service to federate forges.

Written in Go language.

Licensed under MIT.

Gitea

A community managed lightweight code hosting solution. (In progress. For status, see: , )

Written in Go language.

Licensed under MIT.

Gitlab

Starting with 'Social following' Gitlab is working along a roadmap to adding ActivityPub support. See top-level .

Written in Ruby language.

Licensed under MIT.

Git Social

A federated self-hosted git repository management tool

Written in Rust language.

Licensed under GPL-3.0.

Ruisseau

Federated Git platform (still in early stages of development).

Written in Rust language.

Licensed under -.

Vervis

Eventually-decentralized project hosting and management platform. Reference implementation for protocol extension.

Written in Haskell language.

Licensed under AGPL-3.0.

apevents

) - Event management system that allows event creation and coordination across Fediverse

Written in Rust language.

Licensed under MIT.

AP-Groups

Group actors as bot/relay.

Written in TypeScript language.

Licensed under MIT.

Fediplan

A way to safely schedule messages with Mastodon and Pleroma.

Written in PHP language.

Licensed under GPL-3.0.

Group actor

Groups work with any software that implements Mastodon client API; has moderation, admin announcements,

Written in Rust language.

Licensed under MIT.

Guppe

By , adds "groups" support as group-type actors

Written in JavaScript language.

Licensed under GPL-3.0.

Mastodon Bot Autoresponder

a bot that implements group functionality in Mastodon.

Written in Python language.

Licensed under MIT.

tootgroup.py

Emulate group accounts on Mastodon.

Written in Python language.

Licensed under GPL-3.0.

activitypub-core

An attempt to build a spec-compliant ActivityPub server in Node.js.

Written in TypeScript language.

Licensed under MIT.

Alovoa

Free and open-source dating platform that respects your privacy (considering AP support, see )

Written in Java language.

Licensed under AGPL-3.0.

bovine_herd

A bovine powered ActivityPub server, which interoperates with the rest of the FediVerse.

Written in Python language.

Licensed under MIT.

Communecter

Manage cities as a connected citizen, produce openCityData, manage organizations, projects, events openly, an open societal approach (intends to add AP support, see )

Written in PHP language.

Licensed under Apache-2.0.

Corteza

"Digital Work Platform for Humanity" an open-source, low-code federated platform for building cloud-based business apps with CRM capabilities

Written in Go language.

Licensed under Apache-2.0.

DiveDB

Web application that allows Scuba Divers to catalogue and record their dives, dive sites, sealife and photos. ():

Written in Rust language.

Licensed under AGPL-3.0.

ENiGMA½ BBS

A modern BBS software with a nostalgic flair! (In progress, see )

Written in Javascript language.

Licensed under BSD-2-Clause.

FairSync

Develops and collects best practices to synchronize maps and events and to federate messengers and identities. (Funded with NGI0, implementing ActivityStreams, but AP support not clear, currently unlicensed)

Written in Java language.

Licensed under Unknown.

FitTrackee

A simple self-hosted workout / activity tracker. (Still considering AP support, see )

Written in Python language.

Licensed under AGPL-3.0.

flohmarkt

A decentralised federated small trade platform.

Written in Python language.

Licensed under AGPL-3.0.

fossilphant

a static-site generator for Mastodon archives.

Written in Scala language.

Licensed under AGPL-3.0.

hvxahv-platform

A multifunctional decentralized social network implementation.

Written in Go language.

Licensed under MIT.

Immers Space

The decent(ralized) metaverse.

Written in JavaScript language.

Licensed under AGPL-3.0.

Inbox

An application built for a diploma thesis to showcase work with Linked Data Notifications, Activity Streams and ActivityPub, using Solid pod as data provider. (See also . No license, see )

Written in TypeScript language.

Licensed under Unknown.

Life Server

A decentralized personal data framework inspired by MIT's Solid Project (AP support planned, see ),

Written in JavaScript language.

Licensed under MIT.

Ocelot Social

Free and open-source social network for active citizenship.

Written in JavaScript language.

Licensed under MIT.

retrospring

Q&A based social network. Ask questions, give answers and learn more about your friends. (AP support planned. See: )

Written in Ruby language.

Licensed under AGPL-3.0.

Smartlike

A free non-profit decentralized donation processor with a focus on freedom, privacy and efficiency.

Written in Rust language.

Licensed under AGPL-3.0.

Transit Fedilerts

/transit.alerts.social/)): ActivityPub-compliant server for distributing transit service alerts.

Written in Typescript language.

Licensed under ISC.

Vocata

A vocabulary-agnostic ActivityPub server. Vocata does not limit what types of content can be handled by it, and how it is presented to users.

Written in Python language.

Licensed under LGPL-3.0-or-later.