A list of implementations of the ActivityPub protocol.

If you know of an implementation that is missing or if you would like to see an edit to this list please reach out to me via Mastodon/AP:

  • Bridgy

    Free Web Website

    Bridgy pulls comments, likes, and reshares on social networks back to your web site. You can also use it to post to social networks - or comment, like, reshare, or even RSVP - from your own web site. .


    Bridgy icon
  • dokieli

    Free Mac Windows Linux JavaScript Website

    dokieli is a distributed article authoring, annotation, and social notification tool which works from a browser.


    dokieli icon
  • ForgeFed

    Free Self-Hosted Git Website

    ForgeFed (formerly GitPub) is a decentralized federation protocol based on the W3C's ActivityPub, which extends ActivityStream 2.0. It provides a server to server API for pull request, forking and subscription of repositories provided by Git web services (services like GitHub, GitLab, Gogs, Gitea).

    Forum link:


    ForgeFed icon
  • Funkwhale

    Free Linux Web Self-Hosted Website

    Funkwhale is a community-driven project that lets you listen and share music and audio within a decentralized, open network. It can be self-hosted and is libre, open source software.


    Funkwhale icon
  • Hubzilla

    Free Web Self-Hosted Website

    Hubzilla is a powerful platform for creating interconnected based websites featuring a decentralised identity, communications, and permissions framework built using common webserver technology. Hubzilla is very suitable for communities (of any size).


    Hubzilla icon
  • Jejune

    Free Self-Hosted Website

    no-nonsense activitypub implementation

    ActivityPub server designed to use constructions which provide functional security and resilience.


    Jejune icon
  • LearnAwesome

    Free Web Website

    A social network for learners to share reviews on learning resources like books, courses, apps, podcasts, newsletters, livestreams etc. Open-source and ActivityPub compliant.


    LearnAwesome icon
  • Lemmy

    Free Web Self-Hosted Website

    Lemmy is an open-source, federated link aggregator similar to Reddit and built with Rust.


    • Self hostable, easy to deploy.
    • Comes with docker.
    • Live-updating Comment threads.
    • Clean, minimal interface.
    • Mobile-friendly.
    • Full vote scores (+/-) like old reddit.
    • Full moderation.
    • Both site admins, and community moderators.
      • Can lock, remove, and restore posts.
      • Can remove and restore comments.
    • High performance.
      • Server is written in Small Rust iconRust.
    • Front end is ~80kB gzipped.


    Lemmy icon

    Free Web Self-Hosted Website

    Link aggregator inspired by Reddit using ActivityPub federation.


  • Mastodon

    Free Web Self-Hosted Cloudron Website

    Mastodon is a decentralized microblogging engine.


    • Free and open-source.
    • Decentralized, no worries about a single company controlling your communications.
    • Supports the standardized ActivityPub protocol
    • Fully interoperable with Small GNU social iconGNU social and many other ActivityPub or OStatus platforms
    • Real-time timeline updates
    • Media attachments
    • OAuth2 and a straightforward REST API
    • Background processing for long-running tasks
    • Deployable via Docker


    Mastodon icon
  • Misskey

    Free Mac Windows Linux Web Android ... Self-Hosted Website

    Misskey is a decentralized microblogging platform born on Earth.

    Since it exists within the Fediverse (a universe where various social media platforms are organized), it is mutually linked with other social media platforms such as Small Mastodon iconMastodon and Small Pleroma iconPleroma.


    • Post your ideas, discussion topics, fun moments, or anything else you want to share! Misskey supports text, emoji, pictures, videos, and polls!
    • Reactions are the simplest way to respond to others' posts. Simply pick a reaction emote from the list! Reactions on Misskey are much more expressive than other social media services which only allow “liking”.
    • Customize the UI to your own tastes! No UI will work for everyone, so Misskey is completely customizable. Make Misskey yours by editing the style, adjusting timeline layouts, and placing widgets.
    • Organize and store your files! Want to post a picture you have already uploaded? Wish you could organize your files into folders? Misskey Drive is a solution!


    Misskey icon
  • Mobilizon

    Free Web Website

    From a friends and familiy birthday party to a march for climate change, today, our gatherings are trapped in the tech giants' platforms. How to get organized, how to click on “I join” without providing intimate data on Facebook or locking yourself in MeetUp?

    At Framasoft, we want to produce Mobilizon: a free-libre software that will allow communities to create their own spaces to publish events, in order to better emancipate themselves from tech giants. We want to develop a digital common, that everyone can make theirs, withrespect for privacy and activism by design.


    Mobilizon icon
  • Nextcloud

    Free Mac Windows Linux Web Android ... iPhone Android Tablet iPad Self-Hosted F-Droid Cloudron Website

    A safe home for all your data – Access & share your files, calendars, contacts, mail & more from any device, on your terms.


    Nextcloud icon
  • PeerTube

    Free Web Self-Hosted Cloudron Website

    PeerTube is a decentralized, free and open source alternative to video broadcasting services.


    PeerTube icon
  • PixelFed

    Free Web Self-Hosted Cloudron Website

    Pixelfed is an image sharing platform with focus on Privacy, Safety and Security, an ethical alternative to centralized platforms like Instagram.
    Federated, Ad-Free, No algorithms, No 3rd party analytics or tracking.
    Can run on your own server.


    PixelFed icon
  • Pleroma

    Free Web Self-Hosted Website

    Pleroma is a free, federated social networking server built on open protocols. It is compatible with GNU Social, Mastodon, and many other ActivityPub and OStatus implementations.


    Pleroma icon
  • Prismo

    Free Self-Hosted Website

    Federated link aggregation powered by ActivityPub.


    Prismo icon
  • Social Home

    Free Web Self-Hosted Website

    Decentralized social network on the fediverse. Usable for both #microblogging and full length #blog posts. Editing both content and replies is supported.


    Social Home icon

    Freemium Mac Windows Linux Android iPhone ... Chrome OS Android Tablet iPad Chrome Kindle Fire Website lets you write and publish text instantly. Write a note for yourself to read later. Create a standalone article you can quickly broadcast on social media — or publish a full blog. takes the distraction out of writing on other platforms and provides a calm place with your words. Then if you want the world to see them, it's as easy as sharing a link. Privacy is built in to every corner — you don't even have to sign up to use it. Just open the app, write something, and publish.

  • Clients

  • Android

  • Fedilab

    Free Android Website

    Fedilab is a multifunctional Android client to access the distributed Fediverse, consisting of microblogging, photo sharing and video hosting.


    Fedilab icon
  • mastty

    Free Android Website

    Japanese Mastodon client with English translation.


    mastty icon
  • Pawoo

    Free Android iPhone Mastodon Website

    Japanese Mastodon client with English translation.


    Pawoo icon
  • Subway Tooter

    Free Android Website

    Mastodon client for Android 5.0 or later.

    (multiple account,multiple column)

    • You can swipe horizontally to switch columns and accounts.
    • You can add and rearrange columns.
    • Column types: home, notification, local-TL, federate-TL, search, hash tags, conversation, profile, muted, blocked, follow requests, etc.

    (cross account operation)

    • You can favorite/follow operation as a user different from bind to column.


    • Good emoji support.


    • This app uses Chrome Custom Tabs for open media attachment. If it's not available, media attachment is open on other app.


    Subway Tooter icon
  • Tootaloo

    Free Android Website

    This Mastodon client can connect to any mastodon server.

    Supported features:

    • background notifications
    • favourite, notification, home, server, hashtag and global streams
    • reply, boost, favourite
    • account info
    • swipe to remove statuses from device
    • hashtags
    • video and gif attachments


    Tootaloo icon
  • Tusky

    Free Android Website

    A Mastodon client with basic features and the option to choose between a dark and a light theme.


    Tusky icon
  • iOS

  • Amaroq

    Free iPhone Website

    Amaroq is a lightweight universal client for any Mastodon instance! Simply enter the instance you belong to, log in, and enjoy the all the wonders of the federated social network from your phone.


    Amaroq icon
  • GON

    Free iPhone iPad Website

    GON is a Smooth and Confy Client App for Mastodon. You can use for any instance and Easily Switch them. Login to an instance only once makes you easy access between one instance with others.

    • View Followings' Toot
    • View Local Timeline
    • View Federated
    • Follow Others
    • Boost and Like!

    We have lots of plans for update!
    Enjoy Tooting!!


    GON icon
  • Mast

    Commercial Mac iPhone iPad Pleroma Apple Watch ... Mastodon Website

    Mast is a beautiful Mastodon and Pleroma app built with iOS design guidelines in mind.


    Mast icon
  • Oyakodon

    Freemium iPhone iPad Website

    Mastodon client app supporting multi-instance.
    You can switch mastodon instance just with swiping screen.

    [How to use]

    • To register an instance, input a server address.
      e.g. "", "", etc...
    • To switch registered instances, swipe the screen.
    • To switch timeline views, just tap a tab.


    Oyakodon icon
  • Toot!

    Commercial iPhone iPad Mastodon Website

    Toot! is a client for the Mastodon social network. It is beautiful, and full of character and whimsy.


    Toot! icon
  • Cross platform

  • Halcyon

    Free Web Self-Hosted Website

    A twitter-like web client for Mastodon and Pleroma.

    – Twitter like UI, familiar interface.
    – Able to use on all instances.
    – No tracking, No ads.


    Halcyon icon
  • Tootter

    Free Android iPhone iPad Mastodon Website

    • Mastodon app finally appears!
    • Side scrolling supports multiple instances as well!
    • iPad, SplitView is also supported!


    • Timeline can be browsed without changing account!
    • You can browse the timeline cross-cutting with left / right scroll.
    • Instance registration · Easy login!
    • Instant selection is not input

    • The full function of Mastodon can be used!
    It covers all the functions of Mastodon.


    Tootter icon

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