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Hollo is a single-user, headless microblogging server that joins the fediverse and exposes Mastodon-compatible APIs for existing clients.

Open-source alternative to:Mastodon

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Last commit
6 days ago

What is it?

Hollo is a simple microblogging tool built on Fedify, aimed at running a personal, single-user presence on the fediverse. It is intended as a stripped-down alternative to running a full Mastodon instance for one person.

Hollo speaks ActivityPub, so accounts on Mastodon, Misskey and other fediverse servers can follow and interact with it. It has no built-in web interface; instead it implements Mastodon-compatible APIs so that most existing Mastodon clients can be used to post and read.

The project provides deployment guides for Railway, Docker and manual installation, along with documentation on environment variables, initial setup, separating worker nodes and split-domain WebFinger.

Key features

  • 01Single-user microblogging server with no bundled web interface
  • 02Implements Mastodon-compatible APIs for use with existing clients
  • 03Federates over ActivityPub with Mastodon, Misskey and other fediverse servers
  • 04Built on the Fedify framework
  • 05Deployable via Railway, Docker or manual installation
  • 06Supports worker node separation and split-domain WebFinger

Use cases

  • Running a personal fediverse account on your own domain
  • Hosting a lightweight single-user alternative to a full Mastodon server
  • Posting to the fediverse from familiar Mastodon apps

Quick start

  1. 1

    Open the installation docs linked in the README

  2. 2

    Choose a deployment route: Docker, Railway, or manual installation

  3. 3

    Set the environment variables and complete the setup guide

Things to know

  • Hollo is single-user only, so it cannot host multiple accounts.
  • It has no built-in web interface and needs a separate Mastodon-compatible client.
  • It is licensed under AGPL-3.0, a copyleft license with network-use obligations for modified versions.

In collections

Self-hosted apps

Topics

#activitypub#fediverse#microblog#mastodon-api#self-hosted#typescript#hacktoberfest

FAQ

What is hollo?
Hollo is a single-user, headless microblogging server that joins the fediverse and exposes Mastodon-compatible APIs for existing clients. Hollo is a simple microblogging tool built on Fedify, aimed at running a personal, single-user presence on the fediverse. It is intended as a stripped-down alternative to running a full Mastodon instance for one person.
Is hollo free to use? What license does it have?
hollo is open source under the AGPL-3.0 license. Check the license terms before using it in commercial products.
Is hollo still maintained?
Actively maintained. The last commit to hollo was on Nov 2, 2026.
What can I use hollo for?
Running a personal fediverse account on your own domain Hosting a lightweight single-user alternative to a full Mastodon server Posting to the fediverse from familiar Mastodon apps
How do I install hollo?
Open the installation docs linked in the README Choose a deployment route: Docker, Railway, or manual installation Set the environment variables and complete the setup guide
Where can I get hollo?
The source code and installation instructions are on GitHub: https://github.com/fedify-dev/hollo

Summary generated by AI from the project's README. GitHub stats refresh daily.

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