Question2Answer
Forums & CommunityFree open-source Q&A platform in PHP
Replaces Stack Overflow, Quora
Best Plugins Forums & Community for self-hosting
The 13 best Plugins forums & community you can self-host, ranked by community traction.
esoTalk
Forums & CommunitySimple, fast forum software for online discussion
Replaces phpBB, Discourse
MyBB
Forums & CommunityFree and extensible community forum software
Replaces vBulletin, phpBB
SMF
Forums & CommunitySimple Machines Forum community bulletin board
Replaces vBulletin, phpBB
django-machina
Forums & CommunityForum engine for Django applications
Replaces phpBB
YAF.NET
Forums & CommunityOpen-source forum software for ASP.NET
Replaces phpBB, vBulletin
ElkArte
Forums & CommunityModern, free community forum software
Replaces SMF, phpBB
FUDforum
Forums & CommunityFast, scalable, customizable open-source forum
Replaces phpBB, vBulletin
Phorum
Forums & CommunityLightweight, mature PHP message board software
Replaces phpBB
bbPress
Forums & CommunityLightweight forum software that integrates with WordPress
Replaces phpBB, vBulletin
Flarum Tags Extension
Forums & CommunityOfficial tagging extension for Flarum forums
Replaces vBulletin categories
Discuz! X
Forums & CommunityWidely used Chinese-origin community forum system
Replaces phpBB, vBulletin
phpBB mChat
Forums & CommunityShoutbox extension for phpBB forums
Replaces vBulletin chatbox
No apps match these filters.
At a glance
| App | Deploy effort | Difficulty | Min. RAM | License | ★ Stars |
|---|---|---|---|---|---|
| Question2Answer | Under-an-hour setup | Easy | 256 MB | GPL-3.0 | 1,670 |
| esoTalk | Read-the-docs project | Easy | 256 MB | GPL-2.0 | 1,470 |
| MyBB | Under-an-hour setup | Easy | 256 MB | LGPL-3.0 | 1,243 |
| SMF | Under-an-hour setup | Easy | 256 MB | BSD-3-Clause | 750 |
| django-machina | Read-the-docs project | Medium | 256 MB | BSD-3-Clause | 606 |
| YAF.NET | Under-an-hour setup | Medium | 512 MB | Apache-2.0 | 549 |
| ElkArte | Read-the-docs project | Easy | 256 MB | BSD-3-Clause | 189 |
| FUDforum | Read-the-docs project | Medium | 256 MB | GPL-2.0 | 80 |
| Phorum | Read-the-docs project | Medium | 128 MB | PHP-3.01 | 67 |
| bbPress | Read-the-docs project | Easy | 256 MB | GPL-2.0 | 50 |
Quick picks
- Most adopted: Question2Answer (1,670 GitHub stars).
- Lightest footprint: Flarum Tags Extension (from 64 MB RAM, against 512 MB for the heaviest here).
- Licensing: 4 of 13 use GPL-2.0; check the rest individually if you plan to modify and redistribute.
Every option here is open-source and self-hostable, tagged Plugins within the forums & community category. Deploy effort is graded from published container recipes, not vendor claims — see the methodology.