✔ == **added to live website**

🎉 == **projects that have successfully federated with this protocol**

:black_nib: == newly added to this page (added, not altered. Only @lostinlight to remove please)

*Note*: Tools with open protocol issue (not yet implemented), not fully open sourced code, no documentation at all, or alpha state with development inactive for several months, not added for now.

## List of projects have an ActivityPub implementation or are committed to one

*Note*: This list began in issue https://gitlab.com/fediverse/fediverse.gitlab.io/issues/8. Most of these projects include both a back-end and a web client, but this list can also include projects that are only a back-end. Projects that are only a web app, for use with an existing back-end, will go on the [client watchlist ](https://gitlab.com/fediverse/fediverse.gitlab.io/wikis/watchlist-for-client-apps).

#### Social networks, Microblog Apps

* ✔ [Aardwolf](https://github.com/Aardwolf-Social/aardwolf)

* ✔ [Friendica](https://friendi.ca/) - [AP support still in beta](https://friendi.ca/2018/11/18/activitypub-support-in-friendica/), due to be included in the December release of stable.

* ✔[GangGo](https://git.feneas.org/ganggo/federation/issues/17)  - have a basic implementation of AP done. Considering adopting Go-Fed in its place.

* ✔ [GNU social](https://gnu.io/social)

* [Kitsune](https://github.com/valerauko/kitsune) - microblogging

* [Kroeg](https://git.puckipedia.com/kroeg) - git repo errors out

* ✔ [Mastodon](https://joinmastodon.org)

* ✔ [microblog.pub](https://github.com/tsileo/microblog.pub) - single-user microblog server

* ✔ [microstatus](https://github.com/Arkanosis/microstatus) - Lightweight Mastodon- and GNU Social-compatible ActivityPub and OStatus server implementation

* [Minds](https://gitlab.com/minds/engine/merge_requests/28) - a centralized attempt at a FB replacement, incorporating short or long form posts, and live chat, as well as an internal token system (a bit like Reddit gold?)

* ✔ [Misskey](https://joinmisskey.github.io/)

* ✔ [Osada](https://macgirvin.com/wiki/mike/Osada/Home) - an AP server that can also act as a bridge for smoother inter-operation between AP networks and Zot networks (Hubzilla)

* ✔ [Pleroma](https://pleroma.social/)

* [pump.io](https://github.com/pump-io/pump.io/issues/1241)

* [Pylodon](https://github.com/rowanlupton/pylodon) - Flask-based (Python) ActivityPub server , [article](https://blog.rowan.website/2017/12/23/pylodon))

* ✔ [Rustodon](https://github.com/rustodon/rustodon)

* ✔ [SocialHome](https://git.feneas.org/socialhome/socialhome/issues/522) - currently working on adding AP support to their [Python federation library](https://git.feneas.org/jaywink/federation/issues/7)

* ✔ [Kibou](https://git.cybre.club/kibouproject/kibou) - highly customizable multi-protocol social networking server

* ✔ [Smilodon](https://gitlab.com/tuxcrafting/smilodon)

#### Blog and Publishing Apps

* ✔ [Dokie.li](https://dokie.li)

* ✔ [FediBlog](https://framagit.org/DavidLibeau/FediBlog) - fully customisable blog engine

* ✔ [Huzbilla](https://project.hubzilla.org/) - federated CMS with a range of groupware tools available as plug-ins. Support AP with the [pubcrawl plug-in](https://framagit.org/hubzilla/addons/tree/master/pubcrawl).

* [Known](https://github.com/idno/Known/issues/1701)

* [picopub](https://github.com/transitracer/picopub) - created by the developer of Fontina as a "tiny, Mastodon-compatible blog"

* ✔ [Plume](https://github.com/Plume-org/Plume)

* ✔ [Read.as](https://github.com/writeas/Read.as) - a reading app 

* ✔ [WordPress](https://gitlab.com/fediverse/fediverse.gitlab.io/wikis/Wordpress-integration-with-Fediverse) - an [AP plug-in](https://wordpress.org/plugins/activitypub/) by @pfefferle@mastodon.social, that allows users on AP apps to follow WP blogs, was recently updated. See also [Pterotype](https://getpterotype.com/), which @pfefferle says is currently more feature complete. WordPress is now [listed as a project on the-federation.info](https://the-federation.info/wordpress).

* ✔ [Write Freely](https://writefreely.org)

* ✒ [NoteIn](https://github.com/notein/NoteIn) - alpha stage

#### Link-sharing Apps

* [Anancus](https://gitlab.com/tuxether/anancus)

* ✔ [Prismo](https://gitlab.com/mbajur/prismo)

* ✔ [Lemmy](https://github.com/dessalines/lemmy)

#### Media-hosting Apps

* ✔ [Anfora](https://github.com/anforaProject/anfora) (formerly Zinat) - image sharing

* ✔ [FunkWhale](https://medium.com/we-distribute/funkwhale-an-open-source-grooveshark-alternative-begins-activitypub-implementation-cbc10a412b20) - music streaming

* ✒ [Marmota](https://gitlab.com/Nefix/marmota/issues?label_name=ActivityPub) - service like Spotify or any music streaming service, initial commit; 

* [PeerPx](https://github.com/peerpx) - social network for photographers ("alternative to 500px / Flickr")

* ✔ [PeerTube](http://joinpeertube.org/) - video-hosting site using WebTorrent

* ✔ [PixelFed](https://pixelfed.org/) - image sharing

* [Quit.im](https://quit.im) - this is a photo-sharing web client for a GNU social server, rather than a completely separate app, so it will become an AP implementation when the AP plug-in for GS is done.

* [snap.as](https://github.com/snapas) - photo sharing

* ✔ [reel2bits](https://github.com/rhaamo/reel2bits) - Soundcloud-like
 
#### Events and Meetups

* [Calendar-social](https://gitea.polonkai.eu/gergely/calendar-social/issues/122) - definitely planning to [implement AP](https://gitea.polonkai.eu/gergely).

* [Fedevent](https://github.com/shiburizu/fedevent) - a prototype for a "[front-end for a bot account on Mastodon to send out notifications](https://socialhub.network/t/federated-events/226/3)".

* [GetTogether](https://github.com/GetTogetherComm/GetTogether/issues/60)

* ✔ [Mobilizon](https://framagit.org/framasoft/mobilizon/issues/9) - aims to be more than a Meetup clone

Friendica (see above) has an events engine but there are conflicting reports about whether or not federation of events over AP is working yet. [NextCloud federated events](https://github.com/nextcloud/calendar/pull/878) are in the work but this may or may not be AP-compatible.

#### Files, Contacts, and Calendar Syncing Apps

* ✔ [NextCloud-Social](https://github.com/nextcloud/social)

* [MoodleNet](https://moodle.com/moodlenet) - a social client for the Moodle LMS (Learning Management System) aimed at helping teachers collaboratively collate and curate sets of OER (Open Educational Resources).

#### Developer Tools

* ✔ [ActivityPub PHP](https://github.com/pterotype-project/activitypub-php) - library

* ✔ [BridgyFed](https://github.com/snarfed/bridgy-fed/issues?utf8=%E2%9C%93&q=is%3Aissue+is%3Aopen+activitypub)

* ✔ [CommonsPub](https://gitlab.com/OpenCoop/CommonsPub) - a fork of Pleroma intended to provide a UX that supports economic transactions and coordination

* ✔ [Distbin](http://distbin.com/about)  

* ✔ [Express ActivityPub](https://github.com/dariusk/express-activitypub) - reference implementation using Express.js 

* ✒ [FedEvent](https://github.com/shiburizu/fedevent) - a prototype for federating event information

* ✔ [ForgeFed](https://github.com/forgefed/forgefed/) (formerly GitPub) - a set of extensions to AP for federation between code forges (Git hosting sites like GitLab, Gogs, Gitea etc)

* ✔ [go-fed](https://github.com/go-fed/activity) - AP libraries written in Go

* [Indienet](https://source.ind.ie/indienet) - [homepage](https://indienet.info/) - projects goals seem similar to the federated homepages of the IndieWeb, but federated using AP.

* ✔ [LitePub](https://litepub.social/litepub/) - a set of extensions to AP, being developed by devs from Pleroma and Mastodon

* ✔ [Nautilus](https://github.com/aaronpk/Nautilus) - a tool to allow self-hosted blog sites to have their posts followed and commented on via AP

* ✔ [p3k](https://indieweb.org/p3k) - a set of tools indie.web sites can use to support AP [servers](https://the-federation.info/p3k)

* [Places.pub](https://github.com/w3c/activitypub/issues/282) - AP implementation testing tool?

* ✔ [pubgate](https://github.com/autogestion/pubgate) - "Asyncronous Lightweight ActivityPub API ... Based on little-boxes. Implements both the client-to-server API and the federated server-to-server API. Compatible with Mastodon, Pleroma and microblog.pub"

* [Pubstrate](https://gitlab.com/dustyweb/pubstrate) - experimental AP implementation written in GNU Guile (no docs?)

* [Spritely](https://gitlab.com/spritely/) - a new federated media-streaming server in Ratchet, planned by Chris Webber of MediaGoblin fame

* [tags.pub](https://github.com/w3c/activitypub/issues/281) - AP implementation testing tool?

#### Relays [reference](https://github.com/distributopia/fediverse-relays)

* ✔ [Pub relay](https://source.joinmastodon.org/mastodon/pub-relay)

* ✔ [Activity relay](https://git.pleroma.social/pleroma/relay)

* ✔ [Seattle relay](https://gitlab.com/jankysolutions/social.seattle.wa.us/relay)

#### It's Dead, Jim

Listed on this watchlist just in case anyone doesn't realize they're dead, and thinks we just didn't know about them. Also in case a project is orphaned, then reactivated by a new developer.

* :heavy_multiplication_x: [Acorde](https://github.com/polymerwitch/Acorde) - federated social music platform. Almost a year has passed since the initial commit.

* ✖ [CloutStream](https://web.archive.org/web/20180808152307/http://cloutstream.com/) - proposed as a federated replacement for LinkedIn. Original Mastodon.social account appears to have been removed ([copy on Pinafore]( https://pinafore.social/accounts/25168)), all the links projects tools appear to be down. 

* ✖ [Fontina](https://github.com/beta-phenylethylamine/fontina) - proposed as a photo-sharing social media network. GH repo has gone read-only, and now says "dead project".

* [MediaGoblin](https://issues.mediagoblin.org/ticket/5503) - streaming of any and all media files

* ✖ [Numa](https://github.com/numaverse/numaverse-gateway/issues/3) - 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.

* ✖ [Osada](https://framagit.org/zot/osada) - Osada was a full featured social network application running under the ActivityPub protocol. It also communicated with and inter-operated with servers on the Zot6 network. Abandoned by the developers in March 2019.

##Sources

Aside from project homepages and issue trackers, and comments made on the fediverse, the [SocialWG has a list](https://www.w3.org/wiki/Socialwg/ActivityPub_network) of projects they hoped would implement ActivityPub and links to Issues where it's discussed. Also, there is an [implementation report on ActivityPub.rocks](https://activitypub.rocks/implementation-report/). @Mayel from Social.coop created a [web spreadsheet of AP apps](https://ethercalc.org/fediverse-stacks) and their characteristics. More projects using AP are [profiled on We Distribute](http://wedistribute.org/) by Sean Tilley.