Discourse vs Lemmy

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?
FeatureDiscourseLemmy
CategorySocial NetworksSocial Networks
LicenseGPL-2.0AGPL-3.0
LanguageRubyRust
Setup difficultyMediumMedium
Min. RAM2,048 MB512 MB
Deploymentdocker, sourcedocker, bare-metal, source
GitHub stars★ 47,619★ 14,538
First released20132019
ReplacesphpBB, RedditReddit

Why pick each one

Choose Discourse if…

  • Polished modern UI
  • Strong moderation tools
Discourse details

Choose Lemmy if…

  • Reddit-like experience
  • Efficient resource use
Lemmy details

Frequently asked questions

Is Discourse or Lemmy better?

Neither is universally better. Discourse has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.

Are Discourse and Lemmy free and open-source?

Yes. Discourse is licensed under GPL-2.0 and Lemmy under AGPL-3.0. Both can be self-hosted at no software cost.

Can I run Discourse and Lemmy with Docker?

Discourse: yes. Lemmy: yes.

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