AI Index / Open-source form builders

Best Open-source form builders

What AI assistants actually recommend when buyers ask about open-source form builders — measured weekly across 3 engines, published as open data.

Updated 2026-08-01 · 49 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 weekly49 samples3 enginesmethodology

Sample: 49 AI answers · Window: Jul 4, 2026Aug 1, 2026 (4-week rolling) · trend vs prior 4 weeks (44 answers)

What is the best open-source form builders?

Across 49 sampled AI answers from 3 engines, Formbricks is recommended most often — appearing in 61.2% of recommendations, followed by OpnForm (59.2%) and Form.io (55.1%).

This is a measurement of share of voice across 3 AI engines — not an editorial pick. See the full ranking below.

#ProductShareTrendEngines
1
Formbricks

formbricks.com

Best for: AI recommends Formbricks most when buyers ask how do I build and self-host my own online forms without paying per submission (88.9% of those answers)

61.2%

95% CI 47.273.6%

30 mentions · avg pos 2.4

first pick 36.7%

GEMINI 57.1%CLAUDE 85.7%PERPLEXITY 57.1%
Claim
2
OpnForm

opnform.com

Best for: AI recommends OpnForm most when buyers ask best open-source form builder I can self-host for collecting leads (88.9% of those answers)

59.2%

95% CI 45.271.8%

29 mentions · avg pos 3.5

first pick 20.7%

GEMINI 52.4%CLAUDE 57.1%PERPLEXITY 66.7%
Claim
3
Form.io

formio.io

Best for: AI recommends Form.io most when buyers ask best self-hosted form builder for enterprises that need HIPAA or GDPR compliance (88.9% of those answers)

55.1%

95% CI 41.368.1%

27 mentions · avg pos 4.3

first pick 22.2%

GEMINI 57.1%CLAUDE 42.9%PERPLEXITY 57.1%
Claim
4
LimeSurvey

limesurvey.org

Best for: AI recommends LimeSurvey most when buyers ask what self-hosted form builder should I use to replace a commercial form tool on my own infrastructure (100% of those answers)

42.9%

95% CI 3056.7%

21 mentions · avg pos 3.1

first pick 9.5%

GEMINI 47.6%CLAUDE 14.3%PERPLEXITY 47.6%
Claim
5
Typeform

typeform.com

Best for: AI recommends Typeform most when buyers ask what self-hosted form builder should I use to replace a commercial form tool on my own infrastructure (100% of those answers)

40.8%

95% CI 28.254.8%

20 mentions · avg pos 2.6

first pick 15%

GEMINI 42.9%CLAUDE 28.6%PERPLEXITY 42.9%
Claim
6
SurveyJS

surveyjs.io

Best for: AI recommends SurveyJS most when buyers ask which open-source form builder is easiest to embed into a React or Next.js app (88.9% of those answers)

40.8%

95% CI 28.254.8%

20 mentions · avg pos 4.6

first pick 10%

GEMINI 42.9%CLAUDE 28.6%PERPLEXITY 42.9%
Claim
7
HeyForm

Best for: AI recommends HeyForm most when buyers ask open-source alternatives to expensive hosted form platforms with per-response pricing (77.8% of those answers)

38.8%

95% CI 26.452.8%

19 mentions · avg pos 5.5

first pick 5.3%

GEMINI 47.6%CLAUDE 14.3%PERPLEXITY 38.1%
Claim
8
Budibase

budibase.com

Best for: AI recommends Budibase most when buyers ask what self-hosted form builder should I use to replace a commercial form tool on my own infrastructure (88.9% of those answers)

36.7%

95% CI 24.750.7%

18 mentions · avg pos 5.5

first pick 11.1%

GEMINI 42.9%CLAUDE 28.6%PERPLEXITY 33.3%
Claim
9
PostgreSQL

postgresql.org

Best for: AI recommends PostgreSQL most when buyers ask how do I build and self-host my own online forms without paying per submission (66.7% of those answers)

24.5%

95% CI 14.638.1%

12 mentions · avg pos 4.9

first pick 8.3%

GEMINI 47.6%PERPLEXITY 9.5%
Claim
10
OhMyForm

Best for: AI recommends OhMyForm most when buyers ask open-source alternatives to expensive hosted form platforms with per-response pricing (44.4% of those answers)

24.5%

95% CI 14.638.1%

12 mentions · avg pos 5.2

first pick 0%

GEMINI 38.1%CLAUDE 14.3%PERPLEXITY 14.3%
Claim
11
MySQL

mysql.com

Best for: AI recommends MySQL most when buyers ask best open-source form builder I can self-host for collecting leads (44.4% of those answers)

20.4%

95% CI 11.533.6%

10 mentions · avg pos 3.7

first pick 10%

GEMINI 47.6%
Claim
12
Typebot

Best for: AI recommends Typebot most when buyers ask what self-hosted form builder should I use to replace a commercial form tool on my own infrastructure (66.7% of those answers)

18.4%

95% CI 1031.4%

9 mentions · avg pos 3.8

first pick 11.1%

GEMINI 19%CLAUDE 42.9%PERPLEXITY 9.5%
Claim
13
Laravel

laravel.com

Best for: AI recommends Laravel most when buyers ask best open-source form builder I can self-host for collecting leads (33.3% of those answers)

18.4%

95% CI 1031.4%

9 mentions · avg pos 6

first pick 11.1%

GEMINI 33.3%PERPLEXITY 9.5%
Claim
14
React

react.dev

Best for: AI recommends React most when buyers ask which open-source form builder is easiest to embed into a React or Next.js app (100% of those answers)

16.3%

95% CI 8.529%

8 mentions · avg pos 1.2

first pick 50%

GEMINI 14.3%CLAUDE 14.3%PERPLEXITY 19%
Claim
15
Formgrid

formgrid.dev

Best for: AI recommends Formgrid most when buyers ask how do I build and self-host my own online forms without paying per submission (44.4% of those answers)

16.3%

95% CI 8.529%

8 mentions · avg pos 5

first pick 12.5%

GEMINI 19%CLAUDE 28.6%PERPLEXITY 9.5%
Claim
16
Vue

Best for: AI recommends Vue most when buyers ask best open-source form builder I can self-host for collecting leads (33.3% of those answers)

16.3%

95% CI 8.529%

8 mentions · avg pos 5.2

first pick 12.5%

GEMINI 28.6%CLAUDE 14.3%PERPLEXITY 4.8%
Claim
17
Form.io Core

form.io

Best for: AI recommends Form.io Core most when buyers ask self-hosted form builder vs hosted SaaS form tool — when does self-hosting make sense (44.4% of those answers)

10.2%

95% CI 4.421.8%

5 mentions · avg pos 3

first pick 20%

PERPLEXITY 23.8%
Claim
18
FormEngine

formengine.io

Best for: AI recommends FormEngine most when buyers ask which open-source form builder is easiest to embed into a React or Next.js app (88.9% of those answers)

10.2%

95% CI 4.421.8%

5 mentions · avg pos 3.7

first pick 40%

GEMINI 4.8%CLAUDE 14.3%PERPLEXITY 14.3%
Claim
19
Jotform

jotform.com

Best for: AI recommends Jotform most when buyers ask best self-hosted form builder for enterprises that need HIPAA or GDPR compliance (44.4% of those answers)

10.2%

95% CI 4.421.8%

5 mentions · avg pos 4.3

first pick 0%

GEMINI 4.8%CLAUDE 14.3%PERPLEXITY 14.3%
Claim
20
Baserow

baserow.io

Best for: AI recommends Baserow most when buyers ask how do I build and self-host my own online forms without paying per submission (33.3% of those answers)

10.2%

95% CI 4.421.8%

5 mentions · avg pos 7.5

first pick 0%

GEMINI 9.5%CLAUDE 42.9%
Claim
21
Formaloo

formaloo.com

Best for: AI recommends Formaloo most when buyers ask what self-hosted form builder should I use to replace a commercial form tool on my own infrastructure (66.7% of those answers)

10.2%

95% CI 4.421.8%

5 mentions · avg pos 7.5

first pick 0%

GEMINI 9.5%CLAUDE 14.3%PERPLEXITY 9.5%
Claim
22
React Hook Form

react-hook-form.com

Best for: AI recommends React Hook Form most when buyers ask which open-source form builder is easiest to embed into a React or Next.js app (44.4% of those answers)

6.1%

95% CI 2.116.5%

3 mentions · avg pos 2.5

first pick 0%

GEMINI 4.8%PERPLEXITY 9.5%
Claim
23
Zapier AI

zapier.com

Best for: AI recommends Zapier AI most when buyers ask what self-hosted form builder should I use to replace a commercial form tool on my own infrastructure (33.3% of those answers)

6.1%

95% CI 2.116.5%

3 mentions · avg pos 2.5

first pick 33.3%

GEMINI 9.5%PERPLEXITY 4.8%
Claim
24
Cognito Forms

cognitoforms.com

Best for: AI recommends Cognito Forms most when buyers ask best self-hosted form builder for enterprises that need HIPAA or GDPR compliance (55.6% of those answers)

6.1%

95% CI 2.116.5%

3 mentions · avg pos 3.3

first pick 33.3%

GEMINI 4.8%PERPLEXITY 9.5%
Claim
25
FormBuilder

Best for: AI recommends FormBuilder most when buyers ask open-source alternatives to expensive hosted form platforms with per-response pricing (33.3% of those answers)

6.1%

95% CI 2.116.5%

3 mentions · avg pos 7

first pick 0%

GEMINI 14.3%
Claim
26
Google Forms

Best for: AI recommends Google Forms most when buyers ask open-source alternatives to expensive hosted form platforms with per-response pricing (33.3% of those answers)

6.1%

95% CI 2.116.5%

3 mentions · avg pos 7

first pick 0%

PERPLEXITY 14.3%
Claim
27
Tripetto

6.1%

95% CI 2.116.5%

3 mentions · avg pos 7

first pick 0%

GEMINI 14.3%
Claim
28
Paperform

paperform.co

Best for: AI recommends Paperform most when buyers ask self-hosted form builder vs hosted SaaS form tool — when does self-hosting make sense (33.3% of those answers)

6.1%

95% CI 2.116.5%

3 mentions

first pick 0%

PERPLEXITY 14.3%
Claim
29
SourceForge

sourceforge.net

Best for: AI recommends SourceForge most when buyers ask open-source alternatives to expensive hosted form platforms with per-response pricing (33.3% of those answers)

6.1%

95% CI 2.116.5%

3 mentions

first pick 0%

PERPLEXITY 14.3%
Claim
30
Make

make.com

4.1%

95% CI 1.113.7%

2 mentions · avg pos 1

first pick 100%

GEMINI 4.8%PERPLEXITY 4.8%
Claim
31
Linode

linode.com

4.1%

95% CI 1.113.7%

2 mentions · avg pos 5.5

first pick 50%

GEMINI 4.8%PERPLEXITY 4.8%
Claim
32
MongoDB

mongodb.com

Best for: AI recommends MongoDB most when buyers ask best self-hosted form builder for enterprises that need HIPAA or GDPR compliance (44.4% of those answers)

4.1%

95% CI 1.113.7%

2 mentions · avg pos 9

first pick 0%

GEMINI 9.5%
Claim
33
Angular

angular.io

4.1%

95% CI 1.113.7%

2 mentions

first pick 0%

CLAUDE 14.3%PERPLEXITY 4.8%
Claim
34
Tally

tally.so

Best for: AI recommends Tally most when buyers ask open-source alternatives to expensive hosted form platforms with per-response pricing (33.3% of those answers)

4.1%

95% CI 1.113.7%

2 mentions

first pick 0%

CLAUDE 14.3%PERPLEXITY 4.8%
Claim
35
DigitalOcean

digitalocean.com

2%

95% CI 0.410.7%

1 mentions · avg pos 1

first pick 100%

PERPLEXITY 4.8%
Claim
36
Formium

2%

95% CI 0.410.7%

1 mentions · avg pos 1

first pick 100%

GEMINI 4.8%
Claim
37
Formik

Best for: AI recommends Formik most when buyers ask which open-source form builder is easiest to embed into a React or Next.js app (33.3% of those answers)

2%

95% CI 0.410.7%

1 mentions · avg pos 2

first pick 0%

GEMINI 4.8%
Claim
38
ExpiWell

expiwell.com

2%

95% CI 0.410.7%

1 mentions · avg pos 3

first pick 0%

PERPLEXITY 4.8%
Claim
39
HIPAAtizer

hipaatizer.com

2%

95% CI 0.410.7%

1 mentions · avg pos 3

first pick 0%

PERPLEXITY 4.8%
Claim
40
Discord

discord.com

2%

95% CI 0.410.7%

1 mentions · avg pos 4

first pick 0%

GEMINI 4.8%
Claim
41
Formizee

2%

95% CI 0.410.7%

1 mentions · avg pos 4

first pick 0%

PERPLEXITY 4.8%
Claim
42
Formspree

formspree.io

2%

95% CI 0.410.7%

1 mentions · avg pos 4

first pick 0%

PERPLEXITY 4.8%
Claim
43
Formstack

formstack.com

Best for: AI recommends Formstack most when buyers ask best self-hosted form builder for enterprises that need HIPAA or GDPR compliance (44.4% of those answers)

2%

95% CI 0.410.7%

1 mentions · avg pos 4

first pick 0%

GEMINI 4.8%
Claim
44
Slack

slack.com

2%

95% CI 0.410.7%

1 mentions · avg pos 4

first pick 0%

GEMINI 4.8%
Claim
45
Tailwind CSS

tailwindcss.com

2%

95% CI 0.410.7%

1 mentions · avg pos 9

first pick 0%

GEMINI 4.8%
Claim
46
TypeForm Clone

2%

95% CI 0.410.7%

1 mentions · avg pos 9

first pick 0%

GEMINI 4.8%
Claim
47
SQLite

2%

95% CI 0.410.7%

1 mentions · avg pos 12

first pick 0%

GEMINI 4.8%
Claim
48
Bit Form

bit-form.com

2%

95% CI 0.410.7%

1 mentions

first pick 0%

GEMINI 4.8%
Claim
49
ClickUp

clickup.com

2%

95% CI 0.410.7%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
50
Contact Form 7

2%

95% CI 0.410.7%

1 mentions

first pick 0%

GEMINI 4.8%
Claim
51
Dev.to

dev.to

Best for: AI recommends Dev.to most when buyers ask how do I build and self-host my own online forms without paying per submission (44.4% of those answers)

2%

95% CI 0.410.7%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
52
Docassemble

2%

95% CI 0.410.7%

1 mentions

first pick 0%

GEMINI 4.8%
Claim
53
F6S

f6s.com

2%

95% CI 0.410.7%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
54
FilaForms

filaforms.app

2%

95% CI 0.410.7%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
55
Formidable Forms

formidableforms.com

2%

95% CI 0.410.7%

1 mentions

first pick 0%

GEMINI 4.8%
Claim
56
Formly

formly.dev

2%

95% CI 0.410.7%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
57
Hostinger

hostinger.com

2%

95% CI 0.410.7%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
58
Kinto Form Builder

2%

95% CI 0.410.7%

1 mentions

first pick 0%

GEMINI 4.8%
Claim
59
Ninja Forms

2%

95% CI 0.410.7%

1 mentions

first pick 0%

GEMINI 4.8%
Claim
60
OpenAlternative

openalternative.co

Best for: AI recommends OpenAlternative most when buyers ask open-source alternatives to expensive hosted form platforms with per-response pricing (44.4% of those answers)

2%

95% CI 0.410.7%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
61
Vemetric

devsuite.co

2%

95% CI 0.410.7%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
62
jQuery

jquery.com

2%

95% CI 0.410.7%

1 mentions

first pick 0%

CLAUDE 14.3%
Claim

Reading the numbers: Share is a point estimate on 49 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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