Lemmy vs Mastodon

A side-by-side comparison of two self-hosted social networks options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
FeatureLemmyMastodon
CategorySocial NetworksSocial Networks
LicenseAGPL-3.0AGPL-3.0
LanguageRustRuby
Setup difficultyMediumHard
Min. RAM512 MB2,048 MB
Deploymentdocker, bare-metal, sourcedocker, bare-metal, source
GitHub stars★ 14,538★ 50,177
First released20192016
ReplacesRedditTwitter, X

Why pick each one

Choose Lemmy if…

  • Reddit-like experience
  • Efficient resource use
Lemmy details

Choose Mastodon if…

  • Large fediverse network
  • Strong moderation features
Mastodon details

Frequently asked questions

Is Lemmy or Mastodon better?

Neither is universally better. Mastodon has the larger community, while Lemmy is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.

Are Lemmy and Mastodon free and open-source?

Yes. Lemmy is licensed under AGPL-3.0 and Mastodon under AGPL-3.0. Both can be self-hosted at no software cost.

Can I run Lemmy and Mastodon with Docker?

Lemmy: yes. Mastodon: yes.

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