giscus 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?
giscus
Commenting system powered by GitHub Discussions
VS
phpBB mChat
Shoutbox extension for phpBB forums
| Feature | giscus | phpBB mChat |
|---|---|---|
| Category | Forums & Community | Forums & Community |
| License | MIT | GPL-2.0 |
| Language | TypeScript | PHP |
| Setup difficulty | Easy | Easy |
| Min. RAM | 64 MB | 64 MB |
| Deployment | bare-metal, source | source |
| GitHub stars | ★ 12,002 | ★ 14 |
| First released | 2021 | 2014 |
| Replaces | Disqus | vBulletin chatbox |
Why pick each one
Choose giscus if…
- Released under the MIT license
- Easy to set up — beginner-friendly
- Mature project with 12k GitHub stars
- Written in TypeScript
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 giscus or phpBB mChat better?
Neither is universally better. giscus has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.
Are giscus and phpBB mChat free and open-source?
Yes. giscus is licensed under MIT and phpBB mChat under GPL-2.0. Both can be self-hosted at no software cost.
Can I run giscus and phpBB mChat with Docker?
giscus: check the project docs for container support. phpBB mChat: check the project docs for container support.