Forem vs Spectrum
A side-by-side comparison of two self-hosted forums & community options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Forem
Open source community platform behind DEV
VS
Spectrum
Open-source platform for building online communities
| Feature | Forem | Spectrum |
|---|---|---|
| Category | Forums & Community | Forums & Community |
| License | AGPL-3.0 | BSD-3-Clause |
| Language | Ruby | JavaScript |
| Setup difficulty | Hard | Hard |
| Min. RAM | 2,048 MB | 2,048 MB |
| Deployment | docker, source | docker, bare-metal |
| GitHub stars | ★ 22,760 | ★ 10,837 |
| First released | 2019 | 2017 |
| Replaces | Discourse, Reddit | Discord, Discourse |
Why pick each one
Choose Forem if…
- Released under the AGPL-3.0 license
- First-class Docker support for quick deployment
- Mature project with 22.8k GitHub stars
- Written in Ruby
Choose Spectrum if…
- Released under the BSD-3-Clause license
- First-class Docker support for quick deployment
- Mature project with 10.8k GitHub stars
- Written in JavaScript
Frequently asked questions
Is Forem or Spectrum better?
Neither is universally better. Forem has the larger community; both share a hard setup difficulty, so the decision comes down to features and licensing.
Are Forem and Spectrum free and open-source?
Yes. Forem is licensed under AGPL-3.0 and Spectrum under BSD-3-Clause. Both can be self-hosted at no software cost.
Can I run Forem and Spectrum with Docker?
Forem: yes. Spectrum: yes.