Other Servers

Beyond the major platforms, many other ActivityPub servers exist for various use cases.

Microblogging

Akkoma

The most active fork of Pleroma.

Property	Value
Language	Elixir
License	AGPL-3.0
Repository	akkoma.dev/AkkomaGang/akkoma
Latest release	v3.20.1 (2026-09-27)

Inherits Pleroma's emoji reactions, quote posts, multiple post formats and MRF (Message Rewrite Facility). It has disabled the ActivityPub C2S write endpoints.

Rebased (Soapbox)

Pleroma-based backend with a Mastodon-compatible API; "the recommended backend for Soapbox" (a React web frontend).

Property	Value
Language	Elixir
License	AGPL-3.0
Website	soapbox.pub
Repository	gitlab.com/soapbox-pub/rebased (last activity September 2026)

Honk

Minimalist ActivityPub server.

Property	Value
Language	Go
License	ISC
Repository	humungus.tedunangst.com/r/honk (unreachable as of October 2026)

A minimal Go server with SQLite. Its project site was unreachable when this page was verified.

Takahē

Multi-domain ActivityPub server (several domains on one instance). Dormant: no commits since August 2024.

Property	Value
Language	Python (Django)
License	BSD-3-Clause
Repository	github.com/jointakahe/takahe

Sharkey

The main actively maintained Misskey fork.

Property	Value
Language	TypeScript
License	AGPL-3.0
Website	joinsharkey.org
Repository	activitypub.software/TransFem-org/Sharkey

Builds on Misskey (reactions, quotes, MFM) and adds a Mastodon-compatible client API. ~25K accounts on ~500 servers (FediDB, October 2026).

Iceshrimp.NET

Ground-up .NET rewrite continuing the Iceshrimp project (Misskey lineage).

Property	Value
Language	C# (.NET)
License	EUPL-1.2
Repository	iceshrimp.dev/iceshrimp/Iceshrimp.NET

Beta software (latest: v2026.1.2-beta, July 2026), with a Mastodon-compatible client API tested against many apps (README).

Blogging

WriteFreely

Federated blogging platform.

Property	Value
Language	Go
License	AGPL-3.0
Repository	github.com/writefreely/writefreely

Federation: each blog is an actor that can be followed. Multi-paragraph posts federate as Article and single-paragraph posts as Note (or always Note with the notes_only setting) — see posts.go. Latest release v0.17.2 (August 2026).

Plume

Federated blogging engine.

Property	Value
Language	Rust
License	AGPL-3.0
Repository	github.com/Plume-org/Plume

Dormant: no commits since April 2025.

Ghost

Open-source publishing platform with ActivityPub built in since Ghost 6.0 (August 2025). Interop details are on Big Platforms.

Property	Value
Language	JavaScript (AP service: TypeScript, built with Fedify)
License	MIT
Website	ghost.org
AP service	github.com/TryGhost/ActivityPub

ActivityPub runs as a separate service (TryGhost/ActivityPub).

WordPress (ActivityPub plugin)

Automattic-maintained plugin that federates WordPress sites.

Property	Value
Language	PHP
License	MIT
Repository	github.com/Automattic/wordpress-activitypub

Federation: author and blog actors; posts federate to followers and fediverse replies arrive as comments. Latest release 9.3.1 (September 2026). See Big Platforms and the plugin's FEDERATION.md.

Books & Media

BookWyrm

Federated book tracking (Goodreads alternative).

Property	Value
Language	Python (Django)
License	Anti-Capitalist Software License
Repository	github.com/bookwyrm-social/bookwyrm

Federation: BookWyrm sends its own types (Review, Comment, Quotation, …) to other BookWyrm servers and plain types to everyone else — a review becomes an Article, other statuses a Note (models/status.py). Latest release v0.9.3 (September 2026).

Funkwhale

Federated music streaming.

Property	Value
Language	Python (Django)
License	AGPL-3.0
Repository	dev.funkwhale.audio

Federation (docs): libraries and channels can be followed; music is modelled with custom Artist, Album, Track, Library and Audio objects, and listening history federates as Listen. Latest release 2.0.12 (October 2026).

Owncast

Federated live streaming.

Property	Value
Language	Go
License	MIT
Repository	github.com/owncast/owncast

Federation (docs): fediverse users can follow a stream, followers are notified when it goes live and can share that, the admin can send posts to followers, and follows, likes and shares show up in the stream chat. Latest release v0.3.0 (September 2026).

Loops

Federated short-form video (TikTok-style), by the Pixelfed team. In beta (latest v1.0.0-beta.14, August 2026).

Property	Value
Language	PHP (Laravel) + Vue
License	AGPL-3.0
Website	joinloops.org
Repository	github.com/joinloops/loops-server

Federation (beta since October 2025):

• Videos federate as Note objects (CreateActivityBuilder.php)
• Follows, replies, likes, and shares with Mastodon, Pixelfed, PeerTube
• WebFinger, HTTP Signatures, shared inboxes

Link Aggregation

Mbin

A fork and continuation of /kbin (no /kbin commits since December 2024), combining link aggregation and microblogging. Latest release v1.11.0 (October 2026).

Property	Value
Language	PHP
License	AGPL-3.0
Repository	github.com/MbinOrg/mbin

Features:

• Magazines (communities) federate with Lemmy and PieFed
• Microblog posts federate with Mastodon

Events

Mobilizon

Federated event organizing.

Property	Value
Language	Elixir
License	AGPL-3.0
Repository	framagit.org/kaihuri/mobilizon — developed by Kaihuri since 2025 (previously Framasoft)

Federation:

• Event objects
• Group organizing
• RSVP activities

Social Networks

Friendica

Full-featured social network.

Property	Value
Language	PHP
License	AGPL-3.0
Repository	github.com/friendica/friendica

Facebook-like social network that federates over ActivityPub and Diaspora. Latest release 2026.05-1.

Hubzilla

Decentralized publishing platform.

Property	Value
Language	PHP
License	MIT
Repository	framagit.org/hubzilla/core

Channels with nomadic identity over its own Zot/Nomad protocol, plus ActivityPub. Latest release 11.4.1 (September 2026).

Commercial Platforms

Threads (Meta)

Threads federates for opted-in users, but only partially — notably, Threads users could not reply to fediverse posts as of Meta's last public update (June 2025). See Big Platforms for what is and isn't verified.

Relays

Activity Relay

A relay re-shares public posts between the servers subscribed to it, which helps small servers discover content.

Property	Value
Language	Python
Repository	git.pleroma.social/pleroma/relay
Latest release	activityrelay 0.3.5 (April 2025)

Aode Relay

Relay implementation in Rust (last updated July 2026).

Property	Value
Language	Rust
Repository	git.asonix.dog/asonix/relay

See Also

• Server Software Overview
• Big Platforms
• Libraries Overview