AI Index / Open-source community platforms

Best Open-source community platforms

What AI assistants actually recommend when buyers ask about open-source community platforms — measured weekly across 4 engines, published as open data.

Updated 2026-08-04 · 56 sampled answers · rolling 4-week window · methodology

Rankings are measured from sampled AI answers — never editorial, never paid. Orbator builds AI-visibility tooling; when Orbator itself appears in any category, it is measured by the same rules as everyone else.

Updated weekly56 samples4 enginesmethodology

Sample: 56 AI answers · Window: Jul 7, 2026Aug 4, 2026 (4-week rolling) · trend vs prior 4 weeks (42 answers)

What is the best open-source community platforms?

Across 56 sampled AI answers from 4 engines, Discourse is recommended most often — appearing in 96.4% of recommendations, followed by Flarum (67.9%) and NodeBB (60.7%).

This is a measurement of share of voice across 4 AI engines — not an editorial pick. See the full ranking below.

#ProductShareTrendEngines
1
Discourse

discourse.org

96.4%

95% CI 87.999%

54 mentions · avg pos 2.1

first pick 55.6%

GEMINI 95.2%CHATGPT 100%CLAUDE 85.7%PERPLEXITY 100%
Claim
2
Flarum

flarum.org

Best for: AI recommends Flarum most when buyers ask best open-source community platform I can self-host for building a discussion forum (100% of those answers)

67.9%

95% CI 54.878.6%

38 mentions · avg pos 5.4

first pick 5.3%

GEMINI 71.4%CHATGPT 100%CLAUDE 57.1%PERPLEXITY 57.1%
Claim
3
NodeBB

nodebb.org

Best for: AI recommends NodeBB most when buyers ask best self-hosted community software for a brand that wants to own all member data (100% of those answers)

60.7%

95% CI 47.672.4%

34 mentions · avg pos 5.1

first pick 2.9%

GEMINI 61.9%CHATGPT 100%CLAUDE 42.9%PERPLEXITY 52.4%
Claim
4
phpBB

phpbb.com

Best for: AI recommends phpBB most when buyers ask open-source community platform alternatives to expensive hosted community and forum SaaS tools (87.5% of those answers)

41.1%

95% CI 29.254.1%

23 mentions · avg pos 6.6

first pick 13%

GEMINI 61.9%CHATGPT 42.9%CLAUDE 42.9%PERPLEXITY 19%
Claim
5
PHP

php.net

Best for: AI recommends PHP most when buyers ask what open-source community platform should I use for a developer community with Q&A and blog features (87.5% of those answers)

33.9%

95% CI 22.947%

19 mentions · avg pos 18.1

first pick 0%

GEMINI 47.6%CHATGPT 57.1%CLAUDE 28.6%PERPLEXITY 14.3%
Claim
6
HumHub

humhub.org

Best for: AI recommends HumHub most when buyers ask open-source community platform alternatives to expensive hosted community and forum SaaS tools (75% of those answers)

32.1%

95% CI 21.445.2%

18 mentions · avg pos 9.8

first pick 5.6%

GEMINI 23.8%CHATGPT 57.1%PERPLEXITY 42.9%
Claim
7
MyBB

mybb.com

Best for: AI recommends MyBB most when buyers ask open-source community platform alternatives to expensive hosted community and forum SaaS tools (75% of those answers)

28.6%

95% CI 18.441.5%

16 mentions · avg pos 8.6

first pick 0%

GEMINI 52.4%CHATGPT 14.3%CLAUDE 28.6%PERPLEXITY 9.5%
Claim
8
Docker

docker.com

Best for: AI recommends Docker most when buyers ask how do I self-host a community forum that supports SSO, gamification, and moderation tools (100% of those answers)

23.2%

95% CI 14.135.8%

13 mentions · avg pos 6

first pick 7.7%

GEMINI 23.8%CHATGPT 57.1%CLAUDE 14.3%PERPLEXITY 14.3%
Claim
9
Answer

Best for: AI recommends Answer most when buyers ask what open-source community platform should I use for a developer community with Q&A and blog features (100% of those answers)

23.2%

95% CI 14.135.8%

13 mentions · avg pos 13.4

first pick 0%

GEMINI 23.8%CHATGPT 28.6%CLAUDE 14.3%PERPLEXITY 23.8%
Claim
10
Node.js

nodejs.org

Best for: AI recommends Node.js most when buyers ask open-source community platform alternatives to expensive hosted community and forum SaaS tools (50% of those answers)

21.4%

95% CI 12.733.8%

12 mentions · avg pos 14.4

first pick 0%

GEMINI 33.3%CHATGPT 57.1%CLAUDE 14.3%
Claim
11
Circle

circle.so

Best for: AI recommends Circle most when buyers ask self-hosted community platform for a nonprofit vs a SaaS product community — which tools fit each (87.5% of those answers)

21.4%

95% CI 12.733.8%

12 mentions · avg pos 30.5

first pick 0%

GEMINI 14.3%CHATGPT 42.9%PERPLEXITY 28.6%
Claim
12
Forem

forem.com

Best for: AI recommends Forem most when buyers ask open-source community platform alternatives to expensive hosted community and forum SaaS tools (62.5% of those answers)

17.9%

95% CI 1029.8%

10 mentions · avg pos 4.9

first pick 20%

GEMINI 14.3%CHATGPT 42.9%CLAUDE 14.3%PERPLEXITY 14.3%
Claim
13
Apache Answer

Best for: AI recommends Apache Answer most when buyers ask what open-source community platform should I use for a developer community with Q&A and blog features (87.5% of those answers)

17.9%

95% CI 1029.8%

10 mentions · avg pos 6.7

first pick 0%

GEMINI 23.8%CHATGPT 14.3%PERPLEXITY 19%
Claim
14
XenForo

xenforo.com

Best for: AI recommends XenForo most when buyers ask best self-hosted community software for a brand that wants to own all member data (50% of those answers)

16.1%

95% CI 8.727.8%

9 mentions · avg pos 5.3

first pick 0%

GEMINI 28.6%CHATGPT 14.3%CLAUDE 14.3%PERPLEXITY 4.8%
Claim
15
Apache Hop

apache.org

Best for: AI recommends Apache Hop most when buyers ask what open-source community platform should I use for a developer community with Q&A and blog features (100% of those answers)

16.1%

95% CI 8.727.8%

9 mentions · avg pos 7

first pick 0%

GEMINI 14.3%CHATGPT 14.3%CLAUDE 14.3%PERPLEXITY 19%
Claim
16
PostgreSQL

postgresql.org

Best for: AI recommends PostgreSQL most when buyers ask how do I self-host a community forum that supports SSO, gamification, and moderation tools (37.5% of those answers)

16.1%

95% CI 8.727.8%

9 mentions · avg pos 13.4

first pick 11.1%

GEMINI 23.8%CHATGPT 42.9%PERPLEXITY 4.8%
Claim
17
Bettermode

Best for: AI recommends Bettermode most when buyers ask self-hosted community platform for a nonprofit vs a SaaS product community — which tools fit each (87.5% of those answers)

16.1%

95% CI 8.727.8%

9 mentions · avg pos 28

first pick 0%

GEMINI 14.3%CHATGPT 42.9%PERPLEXITY 14.3%
Claim
18
Slack

slack.com

Best for: AI recommends Slack most when buyers ask open-source community platform alternatives to expensive hosted community and forum SaaS tools (50% of those answers)

16.1%

95% CI 8.727.8%

9 mentions · avg pos 29.1

first pick 11.1%

GEMINI 23.8%CHATGPT 42.9%CLAUDE 14.3%
Claim
19
Redis

redis.io

Best for: AI recommends Redis most when buyers ask how do I self-host a community forum that supports SSO, gamification, and moderation tools (37.5% of those answers)

14.3%

95% CI 7.425.7%

8 mentions · avg pos 11.1

first pick 0%

GEMINI 23.8%CHATGPT 28.6%PERPLEXITY 4.8%
Claim
20
WordPress

wordpress.com

14.3%

95% CI 7.425.7%

8 mentions · avg pos 12.6

first pick 12.5%

GEMINI 19%CHATGPT 28.6%CLAUDE 14.3%PERPLEXITY 4.8%
Claim
21
Mighty Networks

mightynetworks.com

Best for: AI recommends Mighty Networks most when buyers ask self-hosted community platform for a nonprofit vs a SaaS product community — which tools fit each (62.5% of those answers)

14.3%

95% CI 7.425.7%

8 mentions · avg pos 15.8

first pick 0%

GEMINI 14.3%CHATGPT 14.3%PERPLEXITY 19%
Claim
22
Vanilla Forums

vanillaforums.com

Best for: AI recommends Vanilla Forums most when buyers ask open-source community platform alternatives to expensive hosted community and forum SaaS tools (37.5% of those answers)

14.3%

95% CI 7.425.7%

8 mentions · avg pos 22.1

first pick 0%

GEMINI 28.6%CHATGPT 14.3%CLAUDE 14.3%
Claim
23
Discord

discord.com

Best for: AI recommends Discord most when buyers ask self-hosted community platform for a nonprofit vs a SaaS product community — which tools fit each (37.5% of those answers)

14.3%

95% CI 7.425.7%

8 mentions · avg pos 36.6

first pick 0%

GEMINI 4.8%CHATGPT 85.7%CLAUDE 14.3%
Claim
24
Lemmy

Best for: AI recommends Lemmy most when buyers ask open-source community platform alternatives to expensive hosted community and forum SaaS tools (37.5% of those answers)

12.5%

95% CI 6.223.6%

7 mentions · avg pos 4.7

first pick 0%

GEMINI 9.5%CLAUDE 14.3%PERPLEXITY 19%
Claim
25
SAML

Best for: AI recommends SAML most when buyers ask how do I self-host a community forum that supports SSO, gamification, and moderation tools (62.5% of those answers)

12.5%

95% CI 6.223.6%

7 mentions · avg pos 6.7

first pick 14.3%

GEMINI 14.3%CHATGPT 28.6%CLAUDE 14.3%PERPLEXITY 4.8%
Claim
26
Dev.to

dev.to

Best for: AI recommends Dev.to most when buyers ask what open-source community platform should I use for a developer community with Q&A and blog features (87.5% of those answers)

12.5%

95% CI 6.223.6%

7 mentions · avg pos 8.8

first pick 28.6%

GEMINI 9.5%CHATGPT 14.3%CLAUDE 14.3%PERPLEXITY 14.3%
Claim
27
MySQL

mysql.com

Best for: AI recommends MySQL most when buyers ask what open-source community platform should I use for a developer community with Q&A and blog features (37.5% of those answers)

12.5%

95% CI 6.223.6%

7 mentions · avg pos 20.7

first pick 0%

GEMINI 28.6%CHATGPT 14.3%
Claim
28
Hivebrite

hivebrite.io

Best for: AI recommends Hivebrite most when buyers ask self-hosted community platform for a nonprofit vs a SaaS product community — which tools fit each (75% of those answers)

12.5%

95% CI 6.223.6%

7 mentions · avg pos 29.5

first pick 0%

GEMINI 9.5%CHATGPT 28.6%PERPLEXITY 14.3%
Claim
29
Mattermost

mattermost.com

Best for: AI recommends Mattermost most when buyers ask open-source community platform alternatives to expensive hosted community and forum SaaS tools (62.5% of those answers)

12.5%

95% CI 6.223.6%

7 mentions · avg pos 42

first pick 0%

GEMINI 9.5%CHATGPT 14.3%PERPLEXITY 19%
Claim
30
Question2Answer

question2answer.org

Best for: AI recommends Question2Answer most when buyers ask what open-source community platform should I use for a developer community with Q&A and blog features (62.5% of those answers)

10.7%

95% CI 521.5%

6 mentions · avg pos 19.2

first pick 0%

GEMINI 9.5%CHATGPT 14.3%PERPLEXITY 14.3%
Claim
31
Scoold

scoold.com

Best for: AI recommends Scoold most when buyers ask what open-source community platform should I use for a developer community with Q&A and blog features (75% of those answers)

8.9%

95% CI 3.919.3%

5 mentions · avg pos 3

first pick 0%

GEMINI 9.5%PERPLEXITY 14.3%
Claim
32
CiviCRM

civicrm.org

Best for: AI recommends CiviCRM most when buyers ask self-hosted community platform for a nonprofit vs a SaaS product community — which tools fit each (62.5% of those answers)

8.9%

95% CI 3.919.3%

5 mentions · avg pos 4.3

first pick 20%

GEMINI 9.5%PERPLEXITY 14.3%
Claim
33
Rails

rubyonrails.org

Best for: AI recommends Rails most when buyers ask what open-source community platform should I use for a developer community with Q&A and blog features (37.5% of those answers)

8.9%

95% CI 3.919.3%

5 mentions · avg pos 6

first pick 0%

GEMINI 14.3%CHATGPT 14.3%PERPLEXITY 4.8%
Claim
34
Keycloak

keycloak.org

Best for: AI recommends Keycloak most when buyers ask how do I self-host a community forum that supports SSO, gamification, and moderation tools (37.5% of those answers)

8.9%

95% CI 3.919.3%

5 mentions · avg pos 44.8

first pick 0%

CHATGPT 42.9%PERPLEXITY 9.5%
Claim
35
Mastodon

7.1%

95% CI 2.817%

4 mentions · avg pos 3.3

first pick 0%

PERPLEXITY 19%
Claim
36
Simple Machines Forum

simplemachines.org

Best for: AI recommends Simple Machines Forum most when buyers ask open-source community platform alternatives to expensive hosted community and forum SaaS tools (37.5% of those answers)

7.1%

95% CI 2.817%

4 mentions · avg pos 4.3

first pick 0%

GEMINI 9.5%CLAUDE 14.3%PERPLEXITY 4.8%
Claim
37
Open Source Social Network

7.1%

95% CI 2.817%

4 mentions · avg pos 7.5

first pick 0%

GEMINI 19%
Claim
38
BuddyPress

7.1%

95% CI 2.817%

4 mentions · avg pos 22

first pick 0%

GEMINI 9.5%CHATGPT 28.6%
Claim
39
Open Social

opensocial.com

7.1%

95% CI 2.817%

4 mentions · avg pos 22.3

first pick 0%

GEMINI 4.8%CHATGPT 14.3%PERPLEXITY 9.5%
Claim
40
bbPress

bbpress.org

7.1%

95% CI 2.817%

4 mentions · avg pos 23.5

first pick 0%

GEMINI 4.8%CHATGPT 28.6%CLAUDE 14.3%
Claim
41
Rocket.Chat

rocket.chat

Best for: AI recommends Rocket.Chat most when buyers ask open-source community platform alternatives to expensive hosted community and forum SaaS tools (62.5% of those answers)

7.1%

95% CI 2.817%

4 mentions · avg pos 52

first pick 0%

GEMINI 4.8%CHATGPT 14.3%PERPLEXITY 9.5%
Claim
42
Zulip

zulip.com

Best for: AI recommends Zulip most when buyers ask open-source community platform alternatives to expensive hosted community and forum SaaS tools (50% of those answers)

7.1%

95% CI 2.817%

4 mentions

first pick 0%

GEMINI 4.8%CLAUDE 14.3%PERPLEXITY 9.5%
Claim
43
Drupal

drupal.org

Best for: AI recommends Drupal most when buyers ask how do I self-host a community forum that supports SSO, gamification, and moderation tools (37.5% of those answers)

5.4%

95% CI 1.814.6%

3 mentions · avg pos 4.5

first pick 0%

CHATGPT 14.3%PERPLEXITY 9.5%
Claim
44
BuddyBoss

buddyboss.com

5.4%

95% CI 1.814.6%

3 mentions · avg pos 5.3

first pick 0%

GEMINI 4.8%CLAUDE 14.3%PERPLEXITY 4.8%
Claim
45
Invision Community

5.4%

95% CI 1.814.6%

3 mentions · avg pos 8.5

first pick 0%

GEMINI 4.8%CLAUDE 14.3%PERPLEXITY 4.8%
Claim
46
Tribe

tribe.so

5.4%

95% CI 1.814.6%

3 mentions · avg pos 16

first pick 0%

GEMINI 4.8%CHATGPT 14.3%PERPLEXITY 4.8%
Claim
47
Auth0

auth0.com

Best for: AI recommends Auth0 most when buyers ask how do I self-host a community forum that supports SSO, gamification, and moderation tools (50% of those answers)

5.4%

95% CI 1.814.6%

3 mentions · avg pos 17.5

first pick 0%

CHATGPT 14.3%PERPLEXITY 9.5%
Claim
48
Disco

disco.co

Best for: AI recommends Disco most when buyers ask self-hosted community platform for a nonprofit vs a SaaS product community — which tools fit each (37.5% of those answers)

5.4%

95% CI 1.814.6%

3 mentions · avg pos 17.5

first pick 0%

GEMINI 9.5%PERPLEXITY 4.8%
Claim
49
FriendsOfFlarum Gamification

Best for: AI recommends FriendsOfFlarum Gamification most when buyers ask how do I self-host a community forum that supports SSO, gamification, and moderation tools (37.5% of those answers)

5.4%

95% CI 1.814.6%

3 mentions · avg pos 18

first pick 0%

GEMINI 14.3%
Claim
50
Higher Logic Vanilla

Best for: AI recommends Higher Logic Vanilla most when buyers ask self-hosted community platform for a nonprofit vs a SaaS product community — which tools fit each (37.5% of those answers)

5.4%

95% CI 1.814.6%

3 mentions · avg pos 19

first pick 0%

GEMINI 9.5%CHATGPT 14.3%
Claim
51
Composer

getcomposer.org

5.4%

95% CI 1.814.6%

3 mentions · avg pos 25.5

first pick 0%

GEMINI 9.5%CLAUDE 14.3%
Claim
52
Authentik

goauthentik.io

5.4%

95% CI 1.814.6%

3 mentions · avg pos 54

first pick 33.3%

GEMINI 4.8%CHATGPT 28.6%
Claim
53
LDAP

3.6%

95% CI 112.1%

2 mentions · avg pos 1

first pick 100%

GEMINI 9.5%
Claim
54
Askbot

askbot.com

3.6%

95% CI 112.1%

2 mentions · avg pos 5

first pick 0%

GEMINI 9.5%
Claim
55
ElkArte

elkarte.net

3.6%

95% CI 112.1%

2 mentions · avg pos 5.5

first pick 0%

GEMINI 4.8%CLAUDE 14.3%
Claim
56
Wild Apricot

wildapricot.com

3.6%

95% CI 112.1%

2 mentions · avg pos 6

first pick 0%

PERPLEXITY 9.5%
Claim
57
Matrix

matrix.org

3.6%

95% CI 112.1%

2 mentions · avg pos 7

first pick 0%

CHATGPT 14.3%PERPLEXITY 4.8%
Claim
58
Tendenci

tendenci.com

3.6%

95% CI 112.1%

2 mentions · avg pos 7.5

first pick 0%

GEMINI 9.5%
Claim
59
Ubuntu

ubuntu.com

3.6%

95% CI 112.1%

2 mentions · avg pos 9

first pick 0%

GEMINI 4.8%CHATGPT 14.3%
Claim
60
TidyBB

3.6%

95% CI 112.1%

2 mentions · avg pos 10

first pick 0%

GEMINI 9.5%
Claim
61
phpFox

phpfox.com

3.6%

95% CI 112.1%

2 mentions · avg pos 12

first pick 0%

GEMINI 4.8%PERPLEXITY 4.8%
Claim
62
WriteFreely

writefreely.org

3.6%

95% CI 112.1%

2 mentions · avg pos 17

first pick 0%

GEMINI 9.5%
Claim
63
Nextcloud

nextcloud.com

3.6%

95% CI 112.1%

2 mentions · avg pos 22.5

first pick 0%

GEMINI 4.8%PERPLEXITY 4.8%
Claim
64
Flarum SSO

3.6%

95% CI 112.1%

2 mentions · avg pos 30

first pick 0%

GEMINI 9.5%
Claim
65
NGINX

nginx.org

3.6%

95% CI 112.1%

2 mentions · avg pos 36.5

first pick 0%

GEMINI 4.8%CHATGPT 14.3%
Claim
66
OpenAlternative

openalternative.co

Best for: AI recommends OpenAlternative most when buyers ask open-source community platform alternatives to expensive hosted community and forum SaaS tools (37.5% of those answers)

3.6%

95% CI 112.1%

2 mentions

first pick 0%

PERPLEXITY 9.5%
Claim
67
Codoforum

1.8%

95% CI 0.39.4%

1 mentions · avg pos 3

first pick 0%

GEMINI 4.8%
Claim
68
Discourse Gamification

1.8%

95% CI 0.39.4%

1 mentions · avg pos 3

first pick 0%

GEMINI 4.8%
Claim
69
Zusam

1.8%

95% CI 0.39.4%

1 mentions · avg pos 5

first pick 0%

PERPLEXITY 4.8%
Claim
70
WordPress.org

wordpress.org

1.8%

95% CI 0.39.4%

1 mentions · avg pos 6

first pick 0%

GEMINI 4.8%
Claim
71
nodebb-plugin-sso-oauth2-multiple

1.8%

95% CI 0.39.4%

1 mentions · avg pos 6

first pick 0%

GEMINI 4.8%
Claim
72
Element

element.io

1.8%

95% CI 0.39.4%

1 mentions · avg pos 7

first pick 0%

CHATGPT 14.3%
Claim
73
MongoDB

mongodb.com

1.8%

95% CI 0.39.4%

1 mentions · avg pos 7

first pick 0%

PERPLEXITY 4.8%
Claim
74
Khoros

khoros.com

1.8%

95% CI 0.39.4%

1 mentions · avg pos 18

first pick 0%

CHATGPT 14.3%
Claim
75
Zendesk

zendesk.com

1.8%

95% CI 0.39.4%

1 mentions · avg pos 20

first pick 0%

GEMINI 4.8%
Claim
76
Podia

podia.com

1.8%

95% CI 0.39.4%

1 mentions · avg pos 24

first pick 0%

GEMINI 4.8%
Claim
77
Let's Encrypt

letsencrypt.org

1.8%

95% CI 0.39.4%

1 mentions · avg pos 33

first pick 0%

CHATGPT 14.3%
Claim
78
Caddy

caddyserver.com

1.8%

95% CI 0.39.4%

1 mentions · avg pos 37

first pick 0%

CHATGPT 14.3%
Claim
79
Cloudflare Workers

cloudflare.com

1.8%

95% CI 0.39.4%

1 mentions · avg pos 42

first pick 0%

CHATGPT 14.3%
Claim
80
MinIO

min.io

1.8%

95% CI 0.39.4%

1 mentions · avg pos 42

first pick 0%

CHATGPT 14.3%
Claim
81
Next.js

nextjs.org

1.8%

95% CI 0.39.4%

1 mentions · avg pos 46

first pick 0%

CHATGPT 14.3%
Claim
82
Ghost

ghost.org

1.8%

95% CI 0.39.4%

1 mentions · avg pos 49

first pick 0%

CHATGPT 14.3%
Claim
83
HubSpot CRM

hubspot.com

1.8%

95% CI 0.39.4%

1 mentions · avg pos 50

first pick 0%

CHATGPT 14.3%
Claim
84
GetTogether

gettogether.community

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
85
Higher Logic Thrive

higherlogic.com

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
86
NetBird

netbird.io

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
87
QuestionPro

questionpro.com

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
88
StoryPrompt

storyprompt.com

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
89
Turf

useturf.io

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim

Reading the numbers: Share is a point estimate on 56 sampled answers, so each row also shows its 95% CI — the Wilson score interval around that share. When two products' intervals overlap, the gap between them isn't statistically meaningful at this sample size. First pick is the share of a product's recommending answers where it was named first, which separates “always mentioned” from “usually the top recommendation”. Full methodology.

Independence: Orbator customers are badged for disclosure. Customer status does not affect prompts, sampling, extraction, or ranking — see the methodology. Your product on this list? Claim it to see the prompts behind your rank and track it weekly.

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