Epicyon vs Mastodon
A side-by-side comparison of two self-hosted social networks options — licensing, setup difficulty, resource needs, and what each one replaces.
Mastodon
Decentralized open-source microblogging server
| Feature | Epicyon | Mastodon |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Category | Social Networks | Social Networks |
| License | AGPL-3.0 | AGPL-3.0 |
| Language | Python | Ruby |
| Setup difficulty | Medium | Hard |
| Min. RAM | 256 MB | 2,048 MB |
| Deployment | bare-metal, source | docker, bare-metal, source |
| GitHub stars | ★ 300 | ★ 50,313 |
| First released | 2019 | 2016 |
| Replaces | Twitter, Mastodon | Twitter, X |
What are Epicyon and Mastodon?
Epicyon
Epicyon is a modern, minimalist ActivityPub server designed to be lightweight, accessible, and easy to run on small hardware. It focuses on a no-JavaScript interface and strong moderation controls.
- No-JavaScript interface
- Runs on small servers
- Strong moderation tools
- Accessible by design
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
Epicyon vs Mastodon: key differences
Epicyon is written in Python, while Mastodon is built with Ruby. Epicyon is the lighter option, starting around 256 MB of RAM against 2,048 MB for Mastodon. Mastodon is the more established project (first released 2016), while Epicyon arrived in 2019. Mastodon has the considerably larger community, at 50,313 GitHub stars versus 300. Mastodon lists first-class Docker deployment; Epicyon does not.
Why pick each one
Choose Epicyon if…
- Released under the AGPL-3.0 license
- Written in Python
- Tiny footprint — runs in 256 MB RAM
Choose Mastodon if…
- Large fediverse network
- Strong moderation features
Watch out for
- Resource-heavy to host
- Operationally complex
Frequently asked questions
Is Epicyon or Mastodon better?
Neither is universally better. Mastodon has the larger community, while Epicyon is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.
Are Epicyon and Mastodon free and open-source?
Yes. Epicyon is licensed under AGPL-3.0 and Mastodon under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run Epicyon and Mastodon with Docker?
Epicyon: check the project docs for container support. Mastodon: yes.
Which is lighter on resources, Epicyon or Mastodon?
Epicyon has the smaller minimum footprint at 256 MB of RAM, compared to about 2,048 MB for Mastodon. Real-world usage depends on library size, user count, and enabled features.