Forem vs Lobsters
A side-by-side comparison of two self-hosted forums & community options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Forem | Lobsters |
|---|---|---|
| Deploy effort | Under-an-hour setup | Read-the-docs project |
| Health score | 96 · Excellent | 87 · Excellent |
| Category | Forums & Community | Forums & Community |
| License | AGPL-3.0 | BSD-3-Clause |
| Language | Ruby | Ruby |
| Setup difficulty | Hard | Medium |
| Min. RAM | 2,048 MB | 512 MB |
| Deployment | docker, source | bare-metal, source |
| GitHub stars | ★ 22,779 | ★ 4,841 |
| First released | 2019 | 2012 |
| Replaces | Discourse, Reddit | Reddit, Hacker News |
What are Forem and Lobsters?
Forem
Forem is the open source social and forum platform that powers the DEV community. It supports articles, discussions, tags, podcasts, and listings, and can be self-hosted to run a niche community.
- Community platform behind DEV
- Articles, discussions, and tags
- Self-hostable for niche communities
Lobsters
Lobsters is the open-source software behind the computing-focused link aggregation community of the same name. It offers tag-based stories, threaded comments, and an invitation-based membership model.
- Tag-based story feed
- Threaded comments
- Invitation tree
- Hotness ranking
Forem vs Lobsters: key differences
Both projects are written in Ruby. Licensing differs — AGPL-3.0 for Forem versus BSD-3-Clause for Lobsters. Lobsters is the lighter option, starting around 512 MB of RAM against 2,048 MB for Forem. Lobsters is the more established project (first released 2012), while Forem arrived in 2019. Forem has the considerably larger community, at 22,779 GitHub stars versus 4,841. Forem lists first-class Docker deployment; Lobsters does not.
Why pick each one
Choose Forem if…
- Powers DEV community
- Rich community features
- Articles podcasts listings
Watch out for
- Heavy Rails stack
- Complex self-host setup
Choose Lobsters if…
- Released under the BSD-3-Clause license
- Active community (4.8k GitHub stars)
- Written in Ruby
- Lightweight — runs in 512 MB RAM
Frequently asked questions
Is Forem or Lobsters better?
Neither is universally better. Forem has the larger community, while Lobsters is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.
Are Forem and Lobsters free and open-source?
Yes. Forem is licensed under AGPL-3.0 and Lobsters under BSD-3-Clause. Both can be self-hosted at no software cost.
Can I run Forem and Lobsters with Docker?
Forem: yes. Lobsters: check the project docs for container support.
Which is lighter on resources, Forem or Lobsters?
Lobsters has the smaller minimum footprint at 512 MB of RAM, compared to about 2,048 MB for Forem. Real-world usage depends on library size, user count, and enabled features.