# delightful fediverse apps  [![delightful](https://codeberg.org/teaserbot-labs/delightful/media/branch/main/assets/delightful-badge.png)](https://codeberg.org/teaserbot-labs/delightful)

A curated list of applications for the Fediverse that are based on the ActivityPub protocol and related standards.

## Contents

- [Applications](#applications)
  - [Social networks, Microblog Apps](#social-networks-microblog-apps)
  - [Blog, Publishing, and Reading Apps](#blog-publishing-and-reading-apps)
  - [Link-sharing, Forum, and Group Apps](#link-sharing-forum-and-group-apps)
  - [Media-hosting Apps](#media-hosting-apps)
  - [Events and Meetups](#events-and-meetups)
  - [Files, Contacts, and Calendar Syncing Apps](#files-contacts-and-calendar-syncing-apps)
  - [Open data](#open-data)
  - [Reviewing](#reviewing)
  - [Games](#games)
  - [Software development](#software-development)
  - [Extensions](#extensions)
  - [Other](#other)
- [Maintainers](#maintainers)
- [Contributors](#contributors)
- [License](#license)

## Applications

Emoji's for each entry provide additional information on project status:

* :heavy_check_mark: == added to live website at [**fediverse.party**](https://fediverse.party)  (Only set by [@lostinlight](https://codeberg.org/lostinlight))
* :tada: == projects that have successfully federated with this protocol
* :ghost: == inactive for over a year, or officially abandoned

#### Social networks, Microblog Apps

* :heavy_check_mark: [**Aardwolf**](https://github.com/Aardwolf-Social/aardwolf) ([site](https://aardwolf.social)): Facebook-like social network connecting communities across the web `AGPL-3.0, Rust`

* :heavy_check_mark: [**Bonfire Social**](https://github.com/bonfire-networks): ([site](https://bonfirenetworks.org/), [Fedi account](https://indieweb.social/@bonfire)): Your plug & play federated social network. Tend to your digital life in community. `AGPL-3.0, Elixir`

* :tada: :heavy_check_mark: [**Dolphin**](https://github.com/syuilo/dolphin): Lightweight ActivityPub Server optimized for single-user. A fork and sister project of Misskey `AGPL-3.0, Javascript`

* :tada: :heavy_check_mark: [**Ecko**](https://github.com/magicstone-dev/ecko) ([Fedi account](https://c4.social/@weex)): A fork of Mastodon to optimize toward community, that is making it as easy as possible to contribute `AGPL-3.0, Ruby`

* :tada: :heavy_check_mark: [**Epicyon**](https://gitlab.com/bashrc2/epicyon) ([site](https://libreserver.org/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 `AGPL-3.0, Python`

* :heavy_check_mark: [**FlockingBird**](https://github.com/flockingbird/roost) ([site](https://flockingbird.social), [Fedi account](https://fosstodon.org/@flockingbird): social network for professionals (WIP)

* :tada: :heavy_check_mark: [**Friendica**](https://github.com/friendica/friendica) ([site](https://friendi.ca)): 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`

* :tada: :heavy_check_mark: [**GNU social**](https://notabug.org/diogo/gnu-social) ([site](https://gnusocial.network)): Microblogging server with multiple plugins `AGPL-3.0, PHP`

* :tada: :heavy_check_mark: [**groundpolis**](https://github.com/xeltica/groundpolis): A microblogging service forked from Misskey `AGPL-3.0, Typescript`

* :tada: :heavy_check_mark: [**Glitch-soc**](https://github.com/glitch-soc/mastodon) ([site](https://glitch-soc.github.io/docs), [Fedi account](https://friend.camp/@darius)): A friendly fork of Mastodon, with the aim of providing additional features at the risk of potentially less stable software `AGPL-3.0, Ruby`

* :heavy_check_mark: [**GoToSocial**](https://github.com/gotosocial/gotosocial) ([Fedi account](https://ondergrond.org/@dumpsterqueer)): A headless Mastodon-compatible Fediverse server project, written in Golang. `AGPL-3.0, Go`

* :tada: :heavy_check_mark: [**Hometown**](https://github.com/hometown-fork/hometown) ([Fedi account](https://friend.camp/@darius)): A fork of Mastodon that provides local posting and a wider range of content types `AGPL-3.0, Ruby` 

* :tada: :heavy_check_mark: [**Honk**](https://humungus.tedunangst.com/r/honk) ([Fedi account](https://honk.tedunangst.com/u/tedu)): ActivityPub server with minimal setup and support costs `ISC, Go`

* :heavy_check_mark: [**Jejune**](https://github.com/kaniini/jejune) - A work-in-progress ActivityPub server designed to use constructions which provide functional security and resilience `ISC license, Python`

* :heavy_check_mark: [**Kanzaki**](https://github.com/KnzkDev/kanzaki): A Mastodon-compatible, ActivityPub-speaking server in OCaml `AGPL-3.0, OCaml`

* :heavy_check_mark: [**Kepi**](https://gitlab.com/marnanel/chapeau) ([Fedi account](https://queer.party/@marnanel)): A Django-based microblogging server, written in Python, which supports the Mastodon protocol. `GPL-2.0, Python`

* [**Kibou**](https://codeberg.org/charlag/kibou): Lightweight social networking server that implements Mastodon's REST API. `AGPL-3.0, Rust`

* :tada: :heavy_check_mark: [**Ktistec**](https://github.com/toddsundsted/ktistec) ([Fedi account](https://mastodon.social/@toddsundsted), [site](https://epiktistes.com/@toddsundsted/)): A single-user ActivityPub server with minimal dependencies, using SQLite, [server](https://epiktistes.com) `AGPL-3.0, Crystal`

* :tada: :heavy_check_mark: [**Kroeg**](https://puckipedia.com/kroeg) ([site](https://puckipedia.com/kroeg)): Generic ActivityPub server, with a focus on microblogging style activities `- , Rust` 

* :heavy_check_mark: [**lectrn**](https://github.com/lectrn/lectrn) ([site](https://lectrn.com/)): A social network for humans that is free, decentralized, open, and easy to use. `AGPL-3.0, Javascript`

* :heavy_check_mark: [**Lumen-ap-server**](https://notabug.org/tinyrabbit/lumen-ap-server) ([Fedi account](https://floss.social/@tinyrabbit)): ActivityPub server using Lumen framework `MIT, PHP`

* :heavy_check_mark: [**mammoth**](https://gitlab.koehn.com/mammoth) ([Fedi account](https://mammoth.home.koehn.com/api/actor/bkoehn)): A federated social media platform implementing the ActivityPub specification for client/server and server/server communications. `AGPL-3.0, Typescript`

* :tada: :heavy_check_mark: [**Mastodon**](https://github.com/tootsuite/mastodon) ([site](https://joinmastodon.org)): Epic microblogging network with many features and multiple interface layouts to choose from `AGPL-3.0, Ruby`

* :tada: :heavy_check_mark: [**microblog.pub**](https://github.com/tsileo/microblog.pub) ([site](http://microblog.pub)): Self-hosted, single-user, ActivityPub powered microblog. Like Pubgate, uses [little-boxes AP library](https://github.com/tsileo/little-boxes) `AGPL-3.0, Python`

* :heavy_check_mark: [**MatticNote**](https://github.com/MatticNote/MatticNote): ActivityPub compatible SNS that aims to be easy for everyone to use. `AGPL-3.0, Go`

* :heavy_check_mark: [**microstatus**](https://github.com/Arkanosis/microstatus): Lightweight Mastodon and GNU Social-compatible server implementation `ISC, Rust`

* :tada: :heavy_check_mark: [**Misskey**](https://github.com/misskey-dev/misskey) ([site](https://join.misskey.page/en)): Sophisticated microblogging with personality. Provides many additional features like calendar, emoji reactions, polls, games, and many other widgets `AGPL-3.0, Javascript`

* :tada: :heavy_check_mark: [**Mistpark 2020**](https://codeberg.org/zot/misty/) aka 'misty' ([site](https://zotlabs.com/misty), [Fedi account](https://macgirvin.com/channel/mike)) - A webserver app that supports AP and Zot protocols, fork of Zap `CC0-like, PHP`

* :heavy_check_mark: [**Osada**](https://codeberg.org/zot/osada) - a full featured social network application. Old [repo](https://framagit.org/zot/osada) abandoned by the developer in March 2019; recently moved to new repo

* :tada: :heavy_check_mark: [**Pleroma**](https://git.pleroma.social/pleroma) ([site](https://pleroma.social)): Microblogging platform `AGPL-3.0, Elixir`

* :heavy_check_mark: [**pubgate**](https://github.com/autogestion/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**](https://github.com/pump-io/pump.io/issues/1241): still considers adding ActivityPub

* :tada: :heavy_check_mark: [**Roadhouse**](https://codeberg.org/zot/roadhouse)  ([site](https://zotlabs.com/roadhouse), [Fedi account](https://macgirvin.com/channel/mike)) - Next gen Fediverse server `CC0-like, PHP`

* :heavy_check_mark: [**Rustodon**](https://github.com/rustodon/rustodon): Mastodon-compatible server `AGPL-3.0, Rust`

* [**Scuttlebutt**](https://github.com/DanielMowitz/ssb_ap_bridge) - currently working on a bridge between SSB and AP networks

* :tada: :heavy_check_mark: [**Smithereen**](https://github.com/grishka/Smithereen): VKontakte-like social network, with friends, walls, photo albums and groups `Unlicense, Java`

* :tada: :heavy_check_mark: [**SocialHome**](https://git.feneas.org/socialhome/socialhome) ([site](https://socialhome.network)): Personal webpage with social networking functionality `AGPL-3.0, Python`

* :tada: [**Socialtap**](https://git.feneas.org/socialtap/server): drink socially! A federated version of Untappd.com. It [extends](https://socialtap.git.feneas.org/vocab) the ActivityPub types `GPL-3.0, Go` 

* :heavy_check_mark: [**Spritely**](https://gitlab.com/spritely) ([Fedi account](https://octodon.social/@spritelyproject)): 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**](https://codeberg.org/streams/streams) ([Fedi account](https://macgirvin.com/channel/mike)): A webserver app that supports AP and Zot protocols (successor to Zap, see [roadmap announcement](https://macgirvin.com/chanview?f=&hash=tzgqnxjeu3Do0DFBQpNQaNvhJgSeO41nfTD_3LivXd7ke7UK4vVxk0w_vjNnRvC3Dob9LKbU4NA4D8vpAF7qkQ)) `-, PHP`

* :heavy_check_mark: [**Swanye**](https://codeberg.org/WammKD/Swanye) ([Fedi account](https://fosstodon.org/@Swanye)): A tumblelog in the style of Tumblr. `AGPL-3.0, Elixir`

* :tada: :heavy_check_mark: [**Tavern**](https://gitlab.com/ngerakines/tavern/-/tree/release-amber-ale) ([Fedi account](https://mastodon.social/@ngerakines)): A minimalistic Activity Pub server. Think Mastodon, but smaller and with fewer features `Go, MIT`

* :heavy_check_mark: [**tranquility**](https://github.com/aumetra/tranquility)**: Small ActivityPub server written in Rust. `MIT, Rust`

* [**Vagabond**](https://github.com/CameronWhiteCS/Vagabond) ([site](https://stable.teamvagabond.com/)): A federated social network built with security and privacy in mind. `GPL-3.0, Python`

* :tada: :heavy_check_mark: [**Zap**](https://codeberg.org/zot/zap) ([site](https://zotlabs.com/zap/), [Fedi account](https://z.macgirvin.com/channel/mike)): A webserver app that supports AP and Zot protocols `CC0-like, PHP`

* :ghost: [**fed**](https://github.com/kissen/fed): Trying to be a basic twitter-like service that works with ActivityPub. Based on [Go-Fed](https://go-fed.org) `GPL-3.0, Go`

* :ghost: [**GangGo**](https://git.feneas.org/ganggo/federation/issues/17)  - Seems to have settled on using [Go-Fed for AP federation](https://git.feneas.org/ganggo/activity). Developer has suspended development for the foreseeable future

* :ghost: [**Kitsune**](https://github.com/valerauko/kitsune): early alpha; no commits since November 2018; homepage down

* :ghost: [**MrBotchi**](https://github.com/mrbotchi-team/mrbotchi) ([Fedi account](https://norimono.moe/@silverscat_3)): A federated microblogging platform for single-user - not updated since June 2020 `AGPL-3.0, Go`

* :ghost: [**Pylodon**](https://github.com/rowanlupton/pylodon) - Flask-based (Python) ActivityPub server , [source code also on GitLab](https://gitlab.com/rowanlupton/pylodon), no updates on either repo for about a year, nor on their [Smilodon client app](https://github.com/rowanlupton/smilodon)

* :ghost: [**Smilodon**](https://gitlab.com/tuxcrafting/smilodon) (server by Tuxcraft) - abandoned by developer "I'm now [working on Sminos](https://gitlab.com/tuxcrafting/sminos/issues/1) 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

* :ghost: [**Technopolis**](https://github.com/technopolis-microblog) ([site](https://technopolis.app/), [Fedi account](https://norimono.moe/@silverscat_3)): A globally interconnected micro-blogging platform inspired by Misskey - not updated since December 2020 `AGPL-3.0, Rust`

* :ghost: [**un chapeau**](https://gitlab.com/marnanel/un_chapeau/-/issues/17): Server for the Mastodon protocol, implemented in Django. Latest commit - May 2019. `AGPL-3.0, Python`

#### Blog, Publishing, and Reading Apps

* [**Dinolog**](https://github.com/bauripalash/dinolog) ([Fedi account](https://fosstodon.org/@bauripalash)): Utterly simplified and lightweight blogging protocol. (AP support planned. See [toot](https://fosstodon.org/@bauripalash/108440377225675211)) `-, Go`

* :heavy_check_mark: [**Dokie.li**](https://github.com/linkeddata/dokieli) ([site](https://dokie.li)): Article authoring and formating `Apache-2.0, Javascript`

* [**Drupal**](https://www.drupal.org/project/activitypub) ([Fedi account](https://realize.be/user/1)): ActivityPub module for Drupal. `GPL-2.0, PHP`

* :heavy_check_mark: [**GoBlog**](https://git.jlel.se/jlelse/GoBlog) ([site](https://goblog.app/), [Fedi account](https://fosstodon.org/@jle)): Simple blogging system written in Go `MIT, Go`

* :heavy_check_mark: [**Hubzilla**](https://framagit.org/hubzilla) ([site](https://hubzilla.org)): CMS with a range of groupware tools available as plug-ins `MIT, PHP` 

* [**Known**](https://github.com/idno/known) ([site](https://withknown.com/), [Fedi account](https://mastodon.social/@benwerd)): A collaborative social publishing engine (Working on AP support, see [this issue](https://github.com/idno/known/issues/2615)). `Apache-2.0, PHP`

* :heavy_check_mark: [**Little Library**](https://github.com/Alamantus/little-library): A digital give-a-book, take-a-book library for ebooks. `AGPL-3.0, Javascript`

* :tada: :heavy_check_mark: [**Plume**](https://github.com/Plume-org/Plume) ([site](https://joinplu.me)): Blogging application `AGPL-3.0, Rust`

* :heavy_check_mark: [**Read.as**](https://github.com/writeas/Read.as) ([site](https://read.as)): Reading app by the devs of WriteFreely `AGPL-3.0, Go`

* :heavy_check_mark: [**Redaktor**](https://redaktor.me): AP-powered CMS

* :heavy_check_mark: [**Stringer**](https://codeberg.org/Stringer/stringer-web) ([site](https://stringer.blog/), [Fedi account](https://mastodon.social/@stringerblog)): A blogging platform for the decentralized web. `AGPL-3.0, PHP`

* :heavy_check_mark: [**WordPress**](https://git.feneas.org/feneas/fediverse/-/wikis/Wordpress-integration-with-Fediverse) - [listed as a project on the-federation.info](https://the-federation.info/wordpress). [AP plug-in](https://wordpress.org/plugins/activitypub) by @pfefferle@mastodon.social, that allows users on AP apps to follow WP blogs, and comment on them, from an AP app

* :tada: :heavy_check_mark: [**WriteFreely**](https://github.com/writefreely) ([site](https://writefreely.org), [Fedi account](https://writing.exchange/@writefreely)): Blog software `AGPL-3.0, Go`

* :heavy_check_mark: [**Yuforium**](https://github.com/yuforium) ([Fedi account](https://mastodon.social/@cpmoser)): A federated community platform that focuses on federated communities so they are no longer constrained to a single entity. `GPL-3.0, Typescript`

* :ghost: [**FediBlog**](https://framagit.org/DavidLibeau/FediBlog) ([site](https://fedi.blog)): Fully customisable blog engine `GPL-3.0, PHP`

* :ghost: [**Lamia**](https://github.com/Scarly-Crow/lamia): Distributed blogging, polls, and status updates powered by activitypub, python, the gay agenda, and snake women. `AGPL-3.0, Python`

* :ghost: [**NoteIn**](https://github.com/notein/NoteIn): No commits since October 2018

#### Link-sharing, Forum, and Group Apps

* [**Flarum**](https://github.com/squeevee/flarum-ext-feddle): Experimental plugin for [Flarum](https://flarum.org/) forum software by [@squeevee](https://yiff.life/@squeevee/102496777538790361)

* :heavy_check_mark: [**Lemmy**](https://github.com/dessalines/lemmy): Link aggregator, by [@LemmyDev](https://mastodon.social/@LemmyDev/102106696961226378) `AGPL-3.0, Rust`

* [**Lobste.rs**](https://github.com/lobsters/lobsters/issues/499): Existing Reddit replacement adding AP support, AP issue still open

* :heavy_check_mark: [**brutalinks**](https://github.com/mariusor/go-littr) ([Fedi account](https://metalhead.club/@mariusor)): Link aggregator inspired by Reddit `MIT, Go`

* :heavy_check_mark: [**lotide**](https://git.sr.ht/~vpzom/lotide): A federated forum / link aggregator. `AGPL-3.0, Rust`

* :heavy_check_mark: [**MoonTree**](https://github.com/Faleidel/moontreeproject): Link aggregator, a work in progress `MIT, Typescript`

* :heavy_check_mark: [**Smilodon**](https://source.puri.sm/liberty/host/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**](https://github.com/wxwmoe/wxwClub): Simple social groups compatible with ActivityPub. `MIT, PHP`

* :ghost: [**Anancus**](https://gitlab.com/tuxether/anancus): By [@tuxether](https://floss.social/@tuxether), Link aggregator, [discontinued](https://gitlab.com/tuxether/anancus/issues/2)?

* :ghost: [**Prismo**](https://gitlab.com/prismosuite/prismo) ([Fedi account](https://mastodon.social/@prismo)): Link aggregator. Latest update - May 2019. `AGPL-3.0, Ruby`

#### Media-hosting Apps

* :heavy_check_mark: [**Anfora**](https://github.com/anforaProject/anfora) ([site](https://anfora.app)): (formerly Zinat) Image sharing `AGPL-3.0, Python`

* :heavy_check_mark: [**CastoPod Host**](https://code.podlibre.org/podlibre/castopod) ([site](https://podlibre.org/), [Fedi account](https://podlibre.social/@castopod)): An open-source hosting platform made for podcasters who want engage and interact with their audience. `AGPL-3.0, PHP`

* :heavy_check_mark: [**Catcast D**](https://github.com/mrcatman/catcast-d) ([Fedi account](https://mastodon.social/@mrcatmann)): A federated video live streaming platform `-, Typescript`

* :heavy_check_mark: [**FChannel**](https://github.com/FChannel0/FChannel-Server): A libre, self-hostable, federated, imageboard platform that utilizes ActivityPub. `AGPL-3.0, Go`

* :tada: :heavy_check_mark: [**FunkWhale**](https://dev.funkwhale.audio/funkwhale/funkwhale) ([site](https://funkwhale.audio)): Music streaming `AGPL-3.0, Python`

* :heavy_check_mark: [**Librecast LIVE**](https://github.com/librestack/librecast-live) ([Fedi account](https://chaos.social/@onepict), [site](https://librecast.net/live.html)): Live Streaming Video Platform with Multicast `GPL-2.0-only OR GPL-3.0-only, Javascript`

* :heavy_check_mark: [**Minipub**](https://github.com/skymethod/minipub) ([site](https://minipub.dev)): Minimal ActivityPub server for posting federated podcast comments `MIT, TypeScript`

* :heavy_check_mark: [**Owncast**](https://github.com/owncast/owncast) ([site](https://owncast.online), [Fedi account](@gabek@mastodon.social)): Owncast is a self-hosted live video and web chat server for use with existing popular broadcasting software. `MIT, Go`

* :tada: :heavy_check_mark: [**PeerTube**](https://github.com/Chocobozzz/PeerTube) ([Fedi account](https://framapiaf.org/@peertube), [site](http://joinpeertube.org)): Video-hosting site using WebTorrent `AGPL-3.0, Typescript`

* :tada: :heavy_check_mark: [**PixelFed**](https://github.com/dansup/pixelfed)* ([site](https://pixelfed.org)): Image sharing `AGPL-3.0, PHP`

* [**Podverse**](https://github.com/podverse/podverse-web) ([Fedi account](https://podcastindex.social/web/@podverse), [site](https://podverse.fm)): Web app for the Podverse podcast clip sharing system. `AGPL-3.0, Typescript`

* [**snap.as**](https://github.com/snapas) ([Fedi account](https://m.abunchtell.com/@snap_as), [site](https://snap.as)): Snap.as is a minimalist tool for publishing and sharing your photos on the web. (Not really started yet)

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

* :ghost: [**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"

* :ghost: [**Marmota**](https://gitlab.com/Nefix/marmota/issues?label_name=ActivityPub): Streaming service like Spotify. No commits -  since March 2019 

* :ghost: [**Pubcast**](https://github.com/pubcast/pubcast) ([site](https://pubcast.pub)): Podcasting platform that allows people to listen to podcasts in a new way. Latest commit - March 2019. `MPL-2.0, Go`

* :ghost: [**PeerPx**](https://github.com/peerpx): Social network for photographers (alternative to 500px / Flickr); Latest commit - October 2018

* :ghost: :heavy_check_mark: [**reel2bits**](https://github.com/rhaamo/reel2bits) ([site](https://reel2bits.org)): Music and podcast hosting, `AGPL-3.0, Python`

* :ghost: [**Soundstorm**](https://github.com/weathermen/soundstorm): The Federated Social Audio Platform. (Currently inactive, see [issue](https://github.com/weathermen/soundstorm/issues/21#issuecomment-882626364)) `GPL-3.0, Python`
 
#### Events and Meetups

* :tada: :heavy_check_mark: [**Gancio**](https://framagit.org/les/gancio) ([site](https://gancio.org)): Shared agenda for local communities; demo [site](https://demo.gancio.org) `AGPL-3.0, Javascript`

* :heavy_check_mark: [**Gath**](https://github.com/lowercasename/gathio): 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**](https://github.com/GetTogetherComm/GetTogether/issues/60) - Still considering adding AP support

* :heavy_check_mark: [**Mobilizon**](https://framagit.org/framasoft/mobilizon) ([site](https://joinmobilizon.org/en), [Fedi account](https://framapiaf.org/@mobilizon)): Aims to be more than a Meetup clone `AGPL-3.0, Elixir`

* :heavy_check_mark: [**The Occasion Octopus**](https://github.com/theoccasionoctopus/theoccasionoctopus-server) ([site](https://www.theoccasionoctopus.net/), [Fedi account](https://fosstodon.org/@theoccasionoctopus)): 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](https://socialhub.activitypub.rocks/t/activitypub-at-36c3-the-decentral-assembly-and-fediverse-party/402/5) and is looking to test interop with other AP events apps. [NextCloud federated events](https://github.com/nextcloud/calendar/pull/878) are in the works but this [may or may not be AP-compatible](https://github.com/nextcloud/server/issues/1440).

* :ghost: [**FedEvent**](https://github.com/shiburizu/fedevent): A prototype for federating event information

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

* [**Artist Hub**](https://github.com/creative-passport/artist-hub) ([site](https://www.creativepassport.net/)): 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`

* :tada: :heavy_check_mark: [**NextCloud-Social**](https://github.com/nextcloud/social) ([site](https://apps.nextcloud.com/apps/social)): Social networking app for NextCloud `AGPL-3.0, PHP`

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

* :ghost: [**Calendar-social**](https://gitea.polonkai.eu/gergely/calendar-social/) - was definitely planning to [implement AP](https://gitea.polonkai.eu/gergely/calendar-social/issues/122). Missing, [presumed discontinued](https://gitea.polonkai.eu/gergely/calendar-social/issues/123)

#### Open data

* :heavy_check_mark: [**bopwiki**](https://codeberg.org/Valenoern/bopwiki) ([Fedi account](https://floss.social/@Valenoern)): An experimental 'microwiki implementation' / 'mini CMS' with ActivityPub support. `GPL-3.0, Common Lisp`

* :heavy_check_mark: [**CPub**](https://gitlab.com/openengiadina/cpub): a semantic web server, implements a Linked Data Platform (LDP), uses RDF Turtle as serialization format, part of the [openEngiadina](https://openengiadina.net) project `AGPL-3.0, Elixir`

* :heavy_check_mark: [**Inventaire**](https://github.com/inventaire/inventaire) ([site](https://inventaire.io/welcome), [Fedi account](https://mamot.fr/@inventaire)): A libre collaborative resource mapper powered by open-knowledge, starting with books. (Considers AP integration, see [Github issue](https://github.com/inventaire/inventaire/issues/187)) `AGPL-3.0, Javascript`

* :heavy_check_mark: [**OLKi**](https://framagit.org/synalp/olki/olki/-/wikis/ActivityPub-dialect-documentation) ([site](https://olki.loria.fr/platform), [Fedi account](https://mastodon.etalab.gouv.fr/@scifed)): 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**](https://gitlab.com/Openki/Openki) ([site](https://openki.net/)): An interactive p2p web-platform to provide barrier-free access to education for everyone. (not federated yet, see [AP feature request](https://gitlab.com/Openki/Openki/-/issues/1263)) `AGPL-3.0, Javascript`

* :heavy_check_mark: [**SemApps**](http://www.virtual-assembly.org/semapps-2/) ([site](http://semapps.org/?PagePrincipale&lang=en)): A collaborative, generic knowledge management system. Aims to ease data storage and filtering. `Apache-2.0, Javascript`

* :heavy_check_mark: [**SkoHub**](https://github.com/hbz/skohub-pubsub) ([site](https://skohub.io)): 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, Javscript`

* [**XWiki**](https://github.com/xwiki) ([site](http://www.xwiki.org/), [Fedi account](https://social.weho.st/@XWiki)): An advanced open source Enterprise Wiki (via the [ActivityPub Extension](https://extensions.xwiki.org/xwiki/bin/view/Extension/ActivityPub%20Application/)). `LGPL 2.1, Java`

#### Reviewing

* :heavy_check_mark: :tada: [**Bookwyrm**](https://github.com/mouse-reeve/bookwyrm) ([site](https://joinbookwyrm.com), [Fedi account](https://tech.lgbt/@bookwyrm)): A federated alternative to Goodreads (non-OSS license) `ANTI-CAPITALIST SOFTWARE LICENSE v1.4, Python`

* :heavy_check_mark: [**Learn Awesome**](https://github.com/learn-awesome/learn): Open-source equivalent review aggregation site. Think GoodReads, but generalized to all learning resources organized by topics, formats and difficulty. `AGPL-3.0, Ruby`

* :heavy_check_mark: [**Readlebee**](https://gitlab.com/Alamantus/Readlebee) ( [Fedi account](https://floss.social/@Readlebee)): An attempt to create a viable Goodreads alternative, book reading progress, lists, reviews, comments `AGPL-3.0, Javascript`

* :ghost: [**exlibris**](https://github.com/exlibris-fed/exlibris): A social network dedicated to tracking and discussing what you're reading, based on [go-fed](https://go-fed.org) (development stalled, see [this toot](https://mastodon.social/web/statuses/105567590537815892)). Latest commit - October 2020 `MIT, Go` 

#### Games

* :heavy_check_mark: [**Dharma**](https://github.com/cjslep/dharma): A federated community-building platform for Eve Online corporations. `AGPL-3.0, Go`

* :heavy_check_mark: [**Guild Website**](https://git.lubar.me/ben/guild-website): Federating guild website using GuildWars2 API `MIT, Go`

* :heavy_check_mark: [**castling.club**](https://github.com/stephank/castling.club) ([site](https://castling.club/), [Fedi account](https://mastodon.social/@kosinus)): 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`

* :heavy_check_mark: [**Wolfgame**](https://gitlab.com/stemid/wolfgame) ([Fedi account](https://mastodon.se/@stemid)): 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`

* :ghost: [**FediQuest**](https://shapegoal.org/matejlach/fediQ-server) ([site](https://shapegoal.org)): A federated alternative to traditionally centralized question & answer platforms, such as Quora/StackOverflow. `GPL-3.0, Go`

#### Software development

* [**ForgeFlux**](https://github.com/forgeflux-org/interface) ([site](https://forgeflux.org/), [Fedi account](https://gts.batsense.net/@forgeflux)): API-space software forge federation. Will implement ForgeFed external to the forges, using the forge's HTTP APIs. `AGPL-3.0, Python`

* :heavy_check_mark: [**ForgeFriends**](https://lab.fedeproxy.eu/forgefriends/forgefriends) ([site](https://forgefriends.org), [Fedi account](https://mastodon.online/@forgefriends)): An online service to federate forges. `AGPL-3.0, Python`

* [**Gitea**](https://github.com/go-gitea/gitea) ([site](https://gitea.io/en-us/)): A community managed lightweight code hosting solution. (In progress. For status, see: [go-gitea/#18240](https://github.com/go-gitea/gitea/issues/18240), [gitea/#3](https://gitea.com/Ta180m/gitea/issues/3)) `MIT, GO`

* :ghost: [**Distbin**](https://github.com/gobengo/distbin) ([site](https://distbin.com)): Post bin. Latest commit - September 2019. `Apache-2.0, Typescript`

#### Extensions

* :heavy_check_mark: [**Fediplan**](https://framagit.org/tom79/fediplan) ([site](https://fedilab.app/page/fediplan/), [Fedi account](https://toot.fedilab.app/@apps)): A way to safely schedule messages with Mastodon and Pleroma. `GPL-3.0, PHP`

* :tada: :heavy_check_mark: [**Group actor**](https://git.ondrovo.com/MightyPork/group-actor) ([Fedi account](https://piggo.space/users/piggo)): Groups work with any software that implements Mastodon client API; has moderation, admin announcements, [test server](https://piggo.space/hob) `MIT, Rust`

* :tada: :heavy_check_mark: [**Guppe**](https://github.com/wmurphyrd/guppe) ([site](https://a.gup.pe)): By [@datatitian](https://social.coop/@datatitian/102837577105371476), adds "groups" support as group-type actors `GPL-3.0, Javascript`

* :tada: :heavy_check_mark: [**Mastodon Bot Autoresponder**](https://github.com/drequivalent/mastodon-bot-autoresponder) ([Fedi account](https://mastodon.ml/@drq)): a bot that implements group functionality in Mastodon. `MIT, Python`

* :heavy_check_mark: [**tootgroup.py**](https://github.com/oe4dns/tootgroup.py): Emulate group accounts on Mastodon. `GPL-3.0, Python`

#### Other

* [**Alovoa**](https://github.com/Alovoa/alovoa) ([site](https://alovoa.com/)): Free and open-source dating platform that respects your privacy (considering AP support, see [issue](https://github.com/Alovoa/alovoa/issues/13)) `AGPL-3.0, Java`

* [**Communecter**](https://github.com/pixelhumain/communecter) ([site](https://www.communecter.org/)): 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](https://github.com/pixelhumain/communecter/issues/1395)) `Apache-2.0, PHP`

* :heavy_check_mark: [**Corteza**](https://github.com/cortezaproject/corteza-server) ([site](https://cortezaproject.org)): "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**](https://git.fairkom.net/fairsync) ([site](https://fairmove.it/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) `?, Java`

* :heavy_check_mark: [**FitTrackee**](https://github.com/SamR1/FitTrackee) ([Fedi account](https://mastodon.social/@SamR1)): A simple self-hosted workout / activity tracker. (Still considering AP support, see [issue](https://github.com/SamR1/FitTrackee/issues/16)) `GPL-3.0, Python`

* :heavy_check_mark: [**hvxahv-platform**](https://github.com/disism/hvxahv) ([site](https://dev.halfmemories.com): A multifunctional decentralized social network implementation. `MIT, Go`

* :heavy_check_mark: [**Immers Space**](https://github.com/immers-space/immers) ([Fedi account](https://gup.pe/u/immersspace)): The decent(ralized) metaverse. `AGPL-3.0, Javascript`

* [**Inbox**](https://github.com/WhyINeedToFillUsername/inbox) ([site](https://whyineedtofillusername.github.io/inbox/about)): 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](https://forum.solidproject.org/t/inbox-new-messaging-application/4093). No license, see [issue](https://github.com/WhyINeedToFillUsername/inbox/issues/2)) `-, Typescript`

* [**Life Server**](https://github.com/interop-alliance/life-server) ([site](https://permanent.cloud/apps/life-server)): A decentralized personal data framework inspired by MIT's Solid Project (AP support planned, see [Roadmap](https://github.com/interop-alliance/life-server/blob/main/README.md#roadmap)), `MIT, Javascript`

* :heavy_check_mark: [**Ocelot Social**](https://github.com/Ocelot-Social-Community/Ocelot-Social): Free and open-source social network for active citizenship. `MIT, Javascript`

* [**retrospring**](https://github.com/Retrospring/retrospring) ([site](https://retrospring.net/), [Fedi account](https://fosstodon.org/@retrospring)): Q&A based social network. Ask questions, give answers and learn more about your friends. (AP support planned. See: [Github issue](https://github.com/Retrospring/retrospring/issues/395)) `AGPL-3.0, Ruby`

* [**Smartlike**](https://github.com/smartlike-org/smartlike) ([site](https://smartlike.org/), [Fedi account](https://mastodon.social/@vadim_frolov)): A free non-profit decentralized donation processor with a focus on freedom, privacy and efficiency. `AGPL-3.0, Rust`

* :ghost: [**Agora**](https://github.com/scenaristeur/agora): [Home page](https://scenaristeur.github.io/agora),  POC to use ActivityPub on top of the Solid Platform. - developed by [@spoggy@mstdn.fr](https://mstdn.fr/@spoggy). Latest commit - June 2020 

* :ghost: [**Indienet**](https://source.ind.ie/indienet) - [homepage](https://web.archive.org/web/20190507034117/https://indienet.info/) - abandoned in favour of [Tincan development](https://small-tech.org/research-and-development)

* :ghost: [**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

* :ghost: [**Pantheon**](https://github.com/TGNThump/Pantheon): Platform for building communities. No commits -  since September 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 and his team. There are boards for discussing a range of [AP implementations on the SocialHub forum](https://socialhub.activitypub.rocks/c/software/14). [Alternative.to](https://alternativeto.net/list/5696/activitypub) has a list of AP servers and client apps. The [ActivityPub tag on GH](https://github.com/topics/activitypub) is also a way to discover projects experimenting with AP.

## Maintainers

If you have questions or feedback regarding this list, then please create an [Issue](https://codeberg.org/fediverse/delightful-fediverse-apps/issues) in our tracker, and optionally `@mention` one or more of our maintainers:

- [`@circlebuilder`](https://codeberg.org/circlebuilder)
- [`@lostinlight`](https://codeberg.org/lostinlight)

## Contributors

With delight we present you some of our [delightful contributors](delightful-contributors.md) (please [add yourself](https://codeberg.org/teaserbot-labs/delightful/src/branch/main/delight-us.md#attribution-of-contributors) if you are missing).

## License

[![CC0 Public domain. This work is free of known copyright restrictions.](https://i.creativecommons.org/p/mark/1.0/88x31.png)](LICENSE)