Hollo vs Mastodon
A side-by-side comparison of two self-hosted social networks options — licensing, setup difficulty, resource needs, and what each one replaces.
Hollo
Single-user federated microblogging server
VS
Mastodon
Decentralized open-source microblogging server
| Feature | Hollo | Mastodon |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 79 · Good | 100 · Excellent |
| Category | Social Networks | Social Networks |
| License | AGPL-3.0 | AGPL-3.0 |
| Language | TypeScript | Ruby |
| Setup difficulty | Medium | Hard |
| Min. RAM | 512 MB | 2,048 MB |
| Deployment | docker, source | docker, bare-metal, source |
| GitHub stars | ★ 489 | ★ 50,319 |
| First released | 2024 | 2016 |
| Replaces | Twitter, Mastodon | Twitter, X |
What are Hollo and Mastodon?
Hollo
Hollo is a federated single-user microblogging server compatible with the Mastodon client API. It is designed for individuals who want their own ActivityPub presence without running a multi-user instance.
- Single-user microblog
- Mastodon API compatible
- ActivityPub federation
- Markdown posts
Mastodon
Mastodon is a free, open-source decentralized social network and microblogging server. It is part of the fediverse, federating with other ActivityPub servers so users can follow accounts across instances.
- ActivityPub federation
- Chronological timelines
- Content warnings and moderation tools
- Rich third-party app ecosystem
Hollo vs Mastodon: key differences
Hollo is written in TypeScript, while Mastodon is built with Ruby. Hollo is the lighter option, starting around 512 MB of RAM against 2,048 MB for Mastodon. Mastodon is the more established project (first released 2016), while Hollo arrived in 2024. Mastodon has the considerably larger community, at 50,319 GitHub stars versus 489.
Why pick each one
Choose Hollo if…
- Released under the AGPL-3.0 license
- First-class Docker support for quick deployment
- Written in TypeScript
- Lightweight — runs in 512 MB RAM
Choose Mastodon if…
- Large fediverse network
- Strong moderation features
Watch out for
- Resource-heavy to host
- Operationally complex
Frequently asked questions
Is Hollo or Mastodon better?
Neither is universally better. Mastodon has the larger community, while Hollo is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.
Are Hollo and Mastodon free and open-source?
Yes. Hollo is licensed under AGPL-3.0 and Mastodon under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run Hollo and Mastodon with Docker?
Hollo: yes. Mastodon: yes.
Which is lighter on resources, Hollo or Mastodon?
Hollo has the smaller minimum footprint at 512 MB of RAM, compared to about 2,048 MB for Mastodon. Real-world usage depends on library size, user count, and enabled features.