Discourse vs Sublinks
A side-by-side comparison of two self-hosted social networks options — licensing, setup difficulty, resource needs, and what each one replaces.
Discourse
Modern open-source community discussion platform
VS
Sublinks
Reddit-style federated link aggregator backend
| Feature | Discourse | Sublinks |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 100 · Excellent | 3 · At risk |
| Category | Social Networks | Social Networks |
| License | GPL-2.0 | AGPL-3.0 |
| Language | Ruby | Java |
| Setup difficulty | Medium | Hard |
| Min. RAM | 2,048 MB | 2,048 MB |
| Deployment | docker, source | docker, source |
| GitHub stars | ★ 47,889 | ★ 80 |
| First released | 2013 | 2023 |
| Replaces | phpBB, Reddit |
What are Discourse and Sublinks?
Discourse
Discourse is a free, open-source platform for community discussion, forums, and mailing lists. It offers real-time updates, trust levels, and an extensive plugin ecosystem.
- Real-time forum updates
- Trust-level moderation
- Rich plugin ecosystem
- Email-in posting
Sublinks
Sublinks is a Lemmy-compatible link aggregator and discussion platform built on the ActivityPub protocol. It aims to federate with the Threadiverse while offering an independent backend implementation.
- Lemmy-compatible federation
- ActivityPub Threadiverse
- Independent Java backend
- Link aggregation and voting
Discourse vs Sublinks: key differences
Discourse is written in Ruby, while Sublinks is built with Java. Licensing differs — GPL-2.0 for Discourse versus AGPL-3.0 for Sublinks. Discourse is the more established project (first released 2013), while Sublinks arrived in 2023. Discourse has the considerably larger community, at 47,889 GitHub stars versus 80.
Why pick each one
Choose Discourse if…
- Polished modern UI
- Strong moderation tools
Watch out for
- Resource-hungry
- Opinionated Docker setup
Choose Sublinks if…
- Released under the AGPL-3.0 license
- First-class Docker support for quick deployment
- Written in Java
Frequently asked questions
Is Discourse or Sublinks better?
Discourse is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider Sublinks if its specific feature set fits your needs better.
Are Discourse and Sublinks free and open-source?
Yes. Discourse is licensed under GPL-2.0 and Sublinks under AGPL-3.0. Both can be self-hosted at no software cost.
Can I run Discourse and Sublinks with Docker?
Discourse: yes. Sublinks: yes.