FluxBB vs MyBB
A side-by-side comparison of two self-hosted forums & community options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | FluxBB | MyBB |
|---|---|---|
| Deploy effort | Read-the-docs project | Under-an-hour setup |
| Health score | 11 · At risk | 83 · Excellent |
| Category | Forums & Community | Forums & Community |
| License | GPL-2.0 | LGPL-3.0 |
| Language | PHP | PHP |
| Setup difficulty | Easy | Easy |
| Min. RAM | 128 MB | 256 MB |
| Deployment | bare-metal, source | docker, bare-metal, source |
| GitHub stars | ★ 544 | ★ 1,242 |
| First released | 2008 | 2005 |
| Replaces | phpBB | vBulletin, phpBB |
What are FluxBB and MyBB?
FluxBB
FluxBB is a fast and lightweight forum application designed to be simpler and quicker than larger forum packages. It focuses on a clean experience for small to medium communities.
- Very lightweight and fast
- Clean simple interface
- Low server requirements
- Easy to administer
MyBB
MyBB is a free, open-source forum software focused on being easy to use, customizable, and extensible. It provides a powerful moderation suite and a plugin and theme system.
- Easy administration panel
- Plugin and theme system
- Powerful moderation tools
- Lightweight footprint
FluxBB vs MyBB: key differences
Both projects are written in PHP. Licensing differs — GPL-2.0 for FluxBB versus LGPL-3.0 for MyBB. FluxBB is the lighter option, starting around 128 MB of RAM against 256 MB for MyBB. MyBB is the more established project (first released 2005), while FluxBB arrived in 2008. MyBB has the considerably larger community, at 1,242 GitHub stars versus 544. MyBB lists first-class Docker deployment; FluxBB does not.
Why pick each one
Choose FluxBB if…
- Released under the GPL-2.0 license
- Easy to set up — beginner-friendly
- Written in PHP
- Tiny footprint — runs in 128 MB RAM
Watch out for
- Minimal feature set
- Slow development
Choose MyBB if…
- Simple to install and run
- Good customization
Watch out for
- Classic forum styling
- No native real-time features
Frequently asked questions
Is FluxBB or MyBB better?
Neither is universally better. MyBB has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.
Are FluxBB and MyBB free and open-source?
Yes. FluxBB is licensed under GPL-2.0 and MyBB under LGPL-3.0. Both can be self-hosted at no software cost.
Can I run FluxBB and MyBB with Docker?
FluxBB: check the project docs for container support. MyBB: yes.
Which is lighter on resources, FluxBB or MyBB?
FluxBB has the smaller minimum footprint at 128 MB of RAM, compared to about 256 MB for MyBB. Real-world usage depends on library size, user count, and enabled features.