Pleroma vs ActivityPub for WordPress
A side-by-side comparison of two self-hosted social networks options — licensing, setup difficulty, resource needs, and what each one replaces.
Pleroma
Lightweight fediverse microblogging server
VS
ActivityPub for WordPress
Turn a WordPress blog into a fediverse actor
| Feature | Pleroma | ActivityPub for WordPress |
|---|---|---|
| Deploy effort | Under-an-hour setup | Read-the-docs project |
| Category | Social Networks | Social Networks |
| License | AGPL-3.0 | MIT |
| Language | Elixir | PHP |
| Setup difficulty | Medium | Easy |
| Min. RAM | 512 MB | 256 MB |
| Deployment | docker, bare-metal, source | source |
| GitHub stars | ★ 2,200 | ★ 583 |
| First released | 2017 | 2019 |
| Replaces | Twitter, Tumblr | Twitter, Medium |
What are Pleroma and ActivityPub for WordPress?
Pleroma
Pleroma is a lightweight, free, open-source social networking server compatible with the fediverse. It implements ActivityPub and the Mastodon API while using fewer resources than Mastodon.
- ActivityPub federation
- Mastodon API compatible
- Low resource footprint
- Multiple frontends supported
ActivityPub for WordPress
The ActivityPub plugin lets a self-hosted WordPress site federate with the fediverse, so people can follow blog posts from Mastodon and other ActivityPub software. It also delivers comments back as replies.
- Federates WordPress posts
- Follow blogs from Mastodon
- Comments as replies
- Official Automattic plugin
Pleroma vs ActivityPub for WordPress: key differences
Pleroma is written in Elixir, while ActivityPub for WordPress is built with PHP. Licensing differs — AGPL-3.0 for Pleroma versus MIT for ActivityPub for WordPress. ActivityPub for WordPress is the lighter option, starting around 256 MB of RAM against 512 MB for Pleroma. Pleroma is the more established project (first released 2017), while ActivityPub for WordPress arrived in 2019. Pleroma has the considerably larger community, at 2,200 GitHub stars versus 583. Pleroma lists first-class Docker deployment; ActivityPub for WordPress does not.
Why pick each one
Choose Pleroma if…
- Runs on small servers
- Compatible with Mastodon apps
Watch out for
- Smaller community
- Less polished admin tools
Choose ActivityPub for WordPress if…
- Released under the MIT license
- Easy to set up — beginner-friendly
- Written in PHP
- Tiny footprint — runs in 256 MB RAM
Frequently asked questions
Is Pleroma or ActivityPub for WordPress better?
Neither is universally better. Pleroma has the larger community, while ActivityPub for WordPress is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are Pleroma and ActivityPub for WordPress free and open-source?
Yes. Pleroma is licensed under AGPL-3.0 and ActivityPub for WordPress under MIT. Both can be self-hosted at no software cost.
Can I run Pleroma and ActivityPub for WordPress with Docker?
Pleroma: yes. ActivityPub for WordPress: check the project docs for container support.
Which is lighter on resources, Pleroma or ActivityPub for WordPress?
ActivityPub for WordPress has the smaller minimum footprint at 256 MB of RAM, compared to about 512 MB for Pleroma. Real-world usage depends on library size, user count, and enabled features.