A curated list of server applications with support for the ActivityPub protocol (Fediverse network) and related standards.
Emoji's for each entry provide additional information on project status:
βοΈ Aardwolf: Facebook-like social network connecting communities across the web AGPL-3.0, Rust
π βοΈ Akkoma (site, Fedi account): A community-driven fork of Pleroma with new features such as support for Misskey-flavored Markdown. AGPL-3.0, Elixir
βοΈ Bonfire Social (site, Fedi account): Your plug & play federated social network. Tend to your digital life in community. AGPL-3.0, Elixir
π βοΈ Calckey: An actively developed, community-driven fork of Misskey with many quality of life improvements for users and admins alike AGPL-3.0, TypeScript
Convene (site, Fedi account): Secure, affordable, private digital spaces for work and play. PPL-3.0, Ruby
π βοΈ Ecko (Fedi account): A fork of Mastodon to optimize toward community, that is making it as easy as possible to contribute AGPL-3.0, Ruby
π βοΈ Epicyon (site): 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 AGPL-3.0, Python
βοΈ FlockingBird (site, Fedi account: social network for professionals (WIP)
π βοΈ FoundKey: A fork of Misskey with various bugfixes and improvements. AGPL-3.0, TypeScript
π βοΈ Friendica (site): Personal network that helps to keep in contact with friends. Interface and functionality include common features of a mainstream social network AGPL-3.0, PHP
π βοΈ GNU social (site): Microblogging server with multiple plugins AGPL-3.0, PHP
Goldfish Social (Fedi account): Alternative for Vine / TikTok (alpha). ActivityPub will come later! AGPL-3.0, PHP
π groundpolis: A microblogging service forked from Misskey AGPL-3.0, TypeScript
π βοΈ Glitch-soc (site, Fedi account): A friendly fork of Mastodon, with the aim of providing additional features at the risk of potentially less stable software AGPL-3.0, Ruby
βοΈ GoToSocial (Fedi account): A headless Mastodon-compatible Fediverse server project, written in Golang. AGPL-3.0, Go
π βοΈ Hometown (Fedi account): A fork of Mastodon that provides local posting and a wider range of content types AGPL-3.0, Ruby
π βοΈ Honk (Fedi account): ActivityPub server with minimal setup and support costs ISC, Go
βοΈ Kanzaki: A Mastodon-compatible, ActivityPub-speaking server in OCaml AGPL-3.0, OCaml
βοΈ Kepi (Fedi account): A Django-based microblogging server, written in Python, which supports the Mastodon protocol. GPL-2.0, Python
Kibou: Lightweight social networking server that implements Mastodon's REST API. AGPL-3.0, Rust
Kitsune: An ActivityPub-speaking microblogging service. AGPL-3.0, Clojure
Kitsune: ActivityPub-federated microblogging. MIT, Rust
π βοΈ Ktistec (Fedi account, site): A single-user ActivityPub server with minimal dependencies, using SQLite, server AGPL-3.0, Crystal
π βοΈ Kroeg (site): Generic ActivityPub server, with a focus on microblogging style activities Unknown , Rust
βοΈ lectrn (site): A social network for humans that is free, decentralized, open, and easy to use. AGPL-3.0, JavaScript
βοΈ mammoth (Fedi account): A federated social media platform implementing the ActivityPub specification for client/server and server/server communications. AGPL-3.0, TypeScript
π βοΈ Mastodon (site): Epic microblogging network with many features and multiple interface layouts to choose from AGPL-3.0, Ruby
π βοΈ microblog.pub (site): Self-hosted, single-user, ActivityPub powered microblog. AGPL-3.0, Python
βοΈ MatticNote: ActivityPub compatible SNS that aims to be easy for everyone to use. AGPL-3.0, Go
βοΈ microstatus: Lightweight Mastodon and GNU Social-compatible server implementation ISC, Rust
π βοΈ Misskey (site): Interplanetary microblogging platform. Provides many additional features like calendar, emoji reactions, polls, games, and many other widgets AGPL-3.0, JavaScript
OCamlot: An ActivityPub server written in OCaml. AGPL-3.0, OCaml
Personal Reader for Drupal (Fedi account, site): A personal reader on your website which is installable as a PWA on your phone or tablet. GPL-2.0, PHP
Pinetta - A decentralized, federated social pinboard in the style of Pinterest. In development. AGPL-3.0, Python
π βοΈ Pleroma (site): Microblogging platform AGPL-3.0, Elixir
pub (Fedi account): A tiny ActivityPub host intended for a single actor, that implements Mastodon API for use with various clients. BSD3-Clause, Go
βοΈ pubgate: Lightweight ActivityPub CMS. Implements both client-to-server (C2S) and server-to-server(S2S) APIs. Compatible with Mastodon, Pixelfed, Pleroma and microblog.pub. BSD-3-clause, Python
pump.io: Still considers adding ActivityPub.
βοΈ Rustodon: Mastodon-compatible server AGPL-3.0, Rust
Scuttlebutt: currently working on a bridge between SSB and AP networks.
Seppo (site, Fedi account): A server-side, single-user, Fediverse-integrated microblog engine. Creating static assets published by webserver. GPL-3.0, OCaml
Shuttlecraft (site, Fedi account): A single user ActivityPub server to interact with the Fediverse and other indie web protocols like RSS. MIT, Javascript
Smalltown: A fork of Mastodon designed for civic communities looking to run their own social networks. AGPL-3.0, Ruby
π βοΈ Smithereen: VKontakte-like social network, with friends, walls, photo albums and groups Unlicense, Java
π βοΈ snac (Fedi account): A simple, minimalistic ActivityPub instance with minimal dependencies, multiuser, no database nor cookies needed, totally JavaScript-free MIT, C
π βοΈ Socialhome (site): Personal webpage with social networking functionality AGPL-3.0, Python
βοΈ Spritely (site, Fedi account): 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. Apache-2.0, Racket
Streams (Fedi account): Public domain federated communications server. Provides a feature rich ActivityPub and Nomad communication node. Public domain and others, PHP
βοΈ Swanye (Fedi account): A tumblelog in the style of Tumblr. AGPL-3.0, Elixir
βοΈ TakahΔ (Fedi account): An experimental Fediverse server for microblogging BSD-3-clause, Python
π βοΈ Tavern (Fedi account): A minimalistic Activity Pub server. Think Mastodon, but smaller and with fewer features MIT, Go
Vagabond (site): A federated social network built with security and privacy in mind. GPL-3.0, Python
π» Dolphin: Lightweight ActivityPub Server optimized for single-user. A fork and sister project of Misskey AGPL-3.0, JavaScript
π» fed: Trying to be a basic twitter-like service that works with ActivityPub. Based on Go-Fed GPL-3.0, Go
π» GangGo - Developer has suspended development for the foreseeable future
π» Jejune - A work-in-progress ActivityPub server designed to use constructions which provide functional security and resilience ISC license, Python
π» Lumen-ap-server (Fedi account): ActivityPub server using Lumen framework MIT, PHP
π» Mistpark 2020 aka 'misty' - A webserver app that supports AP and Zot protocols, fork of Zap. (EOL, replaced by Streams. See #20) CC0-like, PHP
π» MrBotchi (Fedi account): A federated microblogging platform for single-user - not updated since June 2020 AGPL-3.0, Go
π» Osada - A full featured social network application. (EOL, replaced by Streams. See #20) CC0-like, PHP
π» Pylodon - Flask-based (Python) ActivityPub server , source code also on GitLab, no updates on either repo for about a year, nor on their Smilodon client app
π» Redmatrix 2020: A fediverse server. (EOL, replaced by Streams. See #20) CC0-like, PHP
π» Roadhouse: Next gen Fediverse server. (EOL, replaced by Streams. See #20) CC0-like, PHP
π» ShaarliGo: Self-reliantly posting on the #Fediverse with painless hosting and security in mind. GPL-3.0, Go
π» Smilodon (server by Tuxcraft) - abandoned by developer "I'm now working on Sminos and so this will probably be 100% abandoned. There's not much to salvage, its code is cancer." Sminos appears to have never got beyond the initial commits
π» Technopolis (site, Fedi account): A globally interconnected micro-blogging platform inspired by Misskey - not updated since December 2020 AGPL-3.0, Rust
π» tranquility: Small ActivityPub server written in Rust. (Archived, see issue) MIT, Rust
π» un chapeau: Server for the Mastodon protocol, implemented in Django. Latest commit - May 2019. AGPL-3.0, Python
π» Zap: A webserver app that supports AP and Zot protocols (EOL, replaced by Streams. See #20) CC0-like, PHP
Dinolog (Fedi account): Utterly simplified and lightweight blogging protocol. (AP support planned. See toot) Unknown, Go
βοΈ Dokie.li (site): Article authoring and formating Apache-2.0, JavaScript
βοΈ GoBlog (site, Fedi account): Simple blogging system written in Go MIT, Go
βοΈ Hubzilla (site): CMS with a range of groupware tools available as plug-ins MIT, PHP
Known (site, Fedi account): A collaborative social publishing engine (Working on AP support, see this issue). Apache-2.0, PHP
βοΈ Little Library: A digital give-a-book, take-a-book library for ebooks. AGPL-3.0, JavaScript
π βοΈ Plume (site): Blogging application AGPL-3.0, Rust
βοΈ Read.as (site): Reading app by the devs of WriteFreely AGPL-3.0, Go
site: Minimalist blog that implements ActivityPub endpoints. MIT, Javascript
βοΈ WordPress - listed as a project on the-federation.info. AP plug-in by @pfefferle@mastodon.social, that allows users on AP apps to follow WP blogs, and comment on them, from an AP app
π βοΈ WriteFreely (site, Fedi account): Blog software AGPL-3.0, Go
βοΈ Yuforium (Fedi account): A federated community platform that focuses on federated communities so they are no longer constrained to a single entity. GPL-3.0, TypeScript
π» FediBlog (site): Fully customisable blog engine GPL-3.0, PHP
π» Lamia: Distributed blogging, polls, and status updates powered by activitypub, python, the gay agenda, and snake women. AGPL-3.0, Python
π» NoteIn: No commits since October 2018
π» Redaktor: AP-powered CMS; website suspended, no actual code repo
βοΈ brutalinks (Fedi account): Link aggregator inspired by Reddit MIT, Go
ENiGMAΒ½: A modern BBS software with a nostalgic flair. (see: issue) BSD-2-Clause, Javascript
Flarum: Experimental plugin for Flarum forum software by @squeevee
βοΈ Kbin (site) - Link aggregator and microblogging platform for Fediverse AGPL-3.0, PHP
Lobste.rs: Existing Reddit replacement adding AP support, AP issue still open
βοΈ lotide: A federated forum / link aggregator. AGPL-3.0, Rust
βοΈ MoonTree: Link aggregator, a work in progress MIT, Typescript
βοΈ 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 AGPL-3.0, Ruby
vxwClub: Simple social groups compatible with ActivityPub. MIT, PHP
π» Anancus: By @tuxether, Link aggregator, discontinued?
π» Prismo (Fedi account): Link aggregator. Latest update - May 2019. AGPL-3.0, Ruby
βοΈ Anfora (site): (formerly Zinat) Image sharing AGPL-3.0, Python
βοΈ CastoPod Host (site, Fedi account): An open-source hosting platform made for podcasters who want engage and interact with their audience. AGPL-3.0, PHP
βοΈ Catcast D (Fedi account): A federated video live streaming platform Unknown, TypeScript
βοΈ FChannel: A libre, self-hostable, federated, imageboard platform that utilizes ActivityPub. AGPL-3.0, Go
π βοΈ FunkWhale (site): Music streaming AGPL-3.0, Python
βοΈ Librecast LIVE (Fedi account, site): Live Streaming Video Platform with Multicast GPL-2.0-only OR GPL-3.0-only, JavaScript
βοΈ Minipub (site): Minimal ActivityPub server for posting federated podcast comments MIT, TypeScript
βοΈ Owncast (site, Fedi account): Owncast is a self-hosted live video and web chat server for use with existing popular broadcasting software. MIT, Go
π βοΈ PeerTube (Fedi account, site): Video-hosting site using WebTorrent AGPL-3.0, TypeScript
π βοΈ PixelFed (site, Fedi account): Photo Sharing. For Everyone. A free and ethical photo sharing platform. AGPL-3.0, PHP
Podverse (Fedi account, site): Web app for the Podverse podcast clip sharing system. AGPL-3.0, TypeScript
snap.as (Fedi account, site): Snap.as is a minimalist tool for publishing and sharing your photos on the web. (Not really started yet)
π» Acorde - federated social music platform. Almost a year has passed since the initial commit
π» Fontina - proposed as a photo-sharing social media network. GH repo has gone read-only, and now says "dead project"
π» Marmota: Streaming service like Spotify. No commits - since March 2019
π» Pubcast (site): Podcasting platform that allows people to listen to podcasts in a new way. Latest commit - March 2019. MPL-2.0, Go
π» PeerPx: Social network for photographers (alternative to 500px / Flickr); Latest commit - October 2018
π» βοΈ reel2bits (site): Music and podcast hosting, AGPL-3.0, Python
π» Soundstorm: The Federated Social Audio Platform. (Currently inactive, see issue) GPL-3.0, Python
π βοΈ Gancio (site): Shared agenda for local communities; demo site AGPL-3.0, JavaScript
βοΈ Gath: Public events with no registration required, an instance connected with the friend.camp Mastodon instance is up at: http://events.friend.camp GPL-3.0, JavaScript
GetTogether - Still considering adding AP support
βοΈ Mobilizon (site, Fedi account): Aims to be more than a Meetup clone AGPL-3.0, Elixir
βοΈ The Occasion Octopus (site, Fedi account): A federated network ofOpen Data for discovering interesting events AGPL-3.0, PHP
Friendica (see above) has an events engine that federates events over AP and is looking to test interop with other AP events apps. NextCloud federated events are in the works but this may or may not be AP-compatible.
π» FedEvent: A prototype for federating event information
Artist Hub (site): Part of Creative Passport NGI0-funded project for providing a verified digital ID for Music Makers (very early stage of development) AGPL-3.0, TypeScript
π βοΈ NextCloud-Social (site): Social networking app for NextCloud AGPL-3.0, PHP
MoodleNet: Social client for Moodle LMS (Learning Management System) aimed at helping teachers collaboratively collate and curate sets of OER (Open Educational Resources)
π» Calendar-social - was definitely planning to implement AP. Missing, presumed discontinued
βοΈ bopwiki (Fedi account): An experimental 'microwiki implementation' / 'mini CMS' with ActivityPub support. GPL-3.0, Common Lisp
Chatter Net: Chatter Net is a modern decentralized semantic web built atop self-sovereign identity. MIT, Rust
βοΈ CPub: a semantic web server, implements a Linked Data Platform (LDP), uses RDF Turtle as serialization format, part of the openEngiadina project AGPL-3.0, Elixir
βοΈ Inventaire (site, Fedi account): A libre collaborative resource mapper powered by open-knowledge, starting with books. (Considers AP integration, see Github issue) AGPL-3.0, JavaScript
βοΈ OLKi (site, Fedi account): A self-hosted linguistic corpora exchange platform that aims to be a simple gateway to the Fediverse for scientific interaction AGPL-3.0, Python
Openki (site): An interactive p2p web-platform to provide barrier-free access to education for everyone. (not federated yet, see AP feature request) AGPL-3.0, JavaScript
βοΈ SemApps (site): A collaborative, generic knowledge management system. Aims to ease data storage and filtering. Apache-2.0, JavaScript
βοΈ SkoHub (site): 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. Apache-2.0, JavaScript
XWiki (site, Fedi account): An advanced open source Enterprise Wiki (via the ActivityPub Extension). LGPL 2.1, Java
βοΈ π Bookwyrm (site, Fedi account): A federated alternative to Goodreads (non-OSS license) ANTI-CAPITALIST SOFTWARE LICENSE v1.4, Python
βοΈ Learn Awesome: Open-source equivalent review aggregation site. Think GoodReads, but generalized to all learning resources organized by topics, formats and difficulty. AGPL-3.0, Ruby
π» exlibris: A social network dedicated to tracking and discussing what you're reading, based on go-fed (development stalled, see this toot). Latest commit - October 2020 MIT, Go
π» Readlebee ( Fedi account): An attempt to create a viable Goodreads alternative, book reading progress, lists, reviews, comments (Project looking for new Maintainers) AGPL-3.0, JavaScript
βοΈ Dharma: A federated community-building platform for Eve Online corporations. AGPL-3.0, Go
βοΈ Guild Website: Federating guild website using GuildWars2 API MIT, Go
βοΈ castling.club (site, Fedi account): 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. MIT, TypeScript
βοΈ Wolfgame (Fedi account): 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. MIT, Python
π» FediQuest (site): A federated alternative to traditionally centralized question & answer platforms, such as Quora/StackOverflow. GPL-3.0, Go
βοΈ ForgeFlux (site, Fedi account): API-space software forge federation. Will implement ForgeFed external to the forges, using the forge's HTTP APIs. AGPL-3.0, Python
βοΈ ForgeFriends (site, Fedi account): An online service to federate forges. MIT, Go
Gitea (site): A community managed lightweight code hosting solution. (In progress. For status, see: go-gitea/#18240, gitea/#3) MIT, Go
Git Social: A federated self-hosted git repository management tool GPL-3.0, Rust
Ruisseau: Federated Git platform (still in early stages of development). -, Rust
βοΈ Vervis (Fedi account): Eventually-decentralized project hosting and management platform. Reference implementation for ForgeFed protocol extension. AGPL-3.0, Haskell
π» Distbin (site): Post bin. Latest commit - September 2019. Apache-2.0, TypeScript
βοΈ apevents (Fedi account) - Event management system that allows event creation and coordination across Fediverse MIT, Rust
βοΈ AP-Groups (site, Fedi account): Group actors as bot/relay. MIT, TypeScript
βοΈ Fediplan (site, Fedi account): A way to safely schedule messages with Mastodon and Pleroma. GPL-3.0, PHP
π βοΈ Group actor (Fedi account): Groups work with any software that implements Mastodon client API; has moderation, admin announcements, test server MIT, Rust
π βοΈ Guppe (site): By @datatitian, adds "groups" support as group-type actors GPL-3.0, JavaScript
π βοΈ Mastodon Bot Autoresponder (Fedi account): a bot that implements group functionality in Mastodon. MIT, Python
βοΈ tootgroup.py: Emulate group accounts on Mastodon. GPL-3.0, Python
activitypub-core: An attempt to build a spec-compliant ActivityPub server in Node.js. MIT, TypeScript
Alovoa (site): Free and open-source dating platform that respects your privacy (considering AP support, see issue) AGPL-3.0, Java
Communecter (site): Manage cities as a connected citizen, produce openCityData, manage organizations, projects, events openly, an open societal approach (intends to add AP support, see this issue) Apache-2.0, PHP
βοΈ Corteza (site): "Digital Work Platform for Humanity" an open-source, low-code federated platform for building cloud-based business apps with CRM capabilities Apache-2.0, Go
FairSync (site): 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) Unknown, Java
βοΈ FitTrackee (Fedi account): A simple self-hosted workout / activity tracker. (Still considering AP support, see issue) AGPL-3.0, Python
βοΈ hvxahv-platform (site: A multifunctional decentralized social network implementation. MIT, Go
βοΈ Immers Space (Fedi account): The decent(ralized) metaverse. AGPL-3.0, JavaScript
Inbox (site): 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 Solid forum discussion. No license, see issue) Unknown, TypeScript
Life Server (site): A decentralized personal data framework inspired by MIT's Solid Project (AP support planned, see Roadmap), MIT, JavaScript
βοΈ Ocelot Social: Free and open-source social network for active citizenship. MIT, JavaScript
retrospring (site, Fedi account): Q&A based social network. Ask questions, give answers and learn more about your friends. (AP support planned. See: Github issue) AGPL-3.0, Ruby
Smartlike (site, Fedi account): A free non-profit decentralized donation processor with a focus on freedom, privacy and efficiency. AGPL-3.0, Rust
Transit Fedilerts ([site])(https://transit.alerts.social/)): ActivityPub-compliant server for distributing transit service alerts. ISC, Typescript
π» Agora: Home page, POC to use ActivityPub on top of the Solid Platform. - developed by @spoggy@mstdn.fr. Latest commit - June 2020
π» Indienet - homepage - abandoned in favour of Tincan development
π» Numa - built on Ethereum blockchain but intended to federate with AP. No commits since April 2018. No reply on issue about AP compatibility testing from May 8. Homepage now a spam site
π» Pantheon: Platform for building communities. No commits - since September 2019
Aside from project homepages and issue trackers, and comments made on the fediverse, the SocialWG has a list of projects they hoped would implement ActivityPub and links to issues where it's discussed. Also, there is an implementation report on ActivityPub.rocks. @Mayel from Social.coop created a web spreadsheet of AP apps and their characteristics. More projects using AP are profiled on We Distribute by Sean Tilley and his team. There are boards for discussing a range of AP implementations on the SocialHub forum. Alternative.to has a list of AP servers and client apps. The ActivityPub tag on GH is also a way to discover projects experimenting with AP.
If you have questions or feedback regarding this list, then please create an Issue in our tracker, and optionally @mention
one or more of our maintainers:
With delight we present you some of our delightful contributors (please add yourself if you are missing).