Forem vs phpBB mChat
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?
| Feature | Forem | phpBB mChat |
|---|---|---|
| Category | Forums & Community | Forums & Community |
| License | AGPL-3.0 | GPL-2.0 |
| Language | Ruby | PHP |
| Setup difficulty | Hard | Easy |
| Min. RAM | 2,048 MB | 64 MB |
| Deployment | docker, source | source |
| GitHub stars | ★ 22,760 | ★ 14 |
| First released | 2019 | 2014 |
| Replaces | Discourse, Reddit | vBulletin chatbox |
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 phpBB mChat if…
- Released under the GPL-2.0 license
- Easy to set up — beginner-friendly
- Written in PHP
- Tiny footprint — runs in 64 MB RAM
Frequently asked questions
Is Forem or phpBB mChat better?
Neither is universally better. Forem has the larger community, while phpBB mChat is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are Forem and phpBB mChat free and open-source?
Yes. Forem is licensed under AGPL-3.0 and phpBB mChat under GPL-2.0. Both can be self-hosted at no software cost.
Can I run Forem and phpBB mChat with Docker?
Forem: yes. phpBB mChat: check the project docs for container support.