What AI assistants actually recommend when buyers ask about open-source survey tools — measured weekly across 4 engines, published as open data.
Updated 2026-08-02 · 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.
Sample: 56 AI answers · Window: Jul 5, 2026 – Aug 2, 2026 (4-week rolling) · trend vs prior 4 weeks (42 answers)
Across 56 sampled AI answers from 4 engines, LimeSurvey is recommended most often — appearing in 92.9% of recommendations, followed by Formbricks (83.9%) and SurveyJS (64.3%).
This is a measurement of share of voice across 4 AI engines — not an editorial pick. See the full ranking below.
| # | Product | Share | Trend | Engines | |
|---|---|---|---|---|---|
| 1 | LimeSurvey limesurvey.org | 92.9% 95% CI 83–97.2% 52 mentions · avg pos 2.7 first pick 55.8% | — | GEMINI 85.7%CHATGPT 100%CLAUDE 85.7%PERPLEXITY 100% | Claim |
| 2 | Formbricks formbricks.com Best for: AI recommends Formbricks most when buyers ask “best open-source survey tool I can self-host for collecting user feedback” (100% of those answers) | 83.9% 95% CI 72.2–91.3% 47 mentions · avg pos 5.5 first pick 14.9% | — | GEMINI 85.7%CHATGPT 85.7%CLAUDE 71.4%PERPLEXITY 85.7% | Claim |
| 3 | SurveyJS surveyjs.io Best for: AI recommends SurveyJS most when buyers ask “how do I deploy a self-hosted survey tool that supports conditional logic and response exports” (100% of those answers) | 64.3% 95% CI 51.2–75.5% 36 mentions · avg pos 6.5 first pick 0% | — | GEMINI 71.4%CHATGPT 42.9%CLAUDE 71.4%PERPLEXITY 61.9% | Claim |
| 4 | Docker docker.com Best for: AI recommends Docker most when buyers ask “best open-source survey tool I can self-host for collecting user feedback” (100% of those answers) | 57.1% 95% CI 44.1–69.2% 32 mentions · avg pos 7.2 first pick 6.3% | — | GEMINI 61.9%CHATGPT 57.1%CLAUDE 57.1%PERPLEXITY 52.4% | Claim |
| 5 | OpnForm opnform.com Best for: AI recommends OpnForm most when buyers ask “open-source survey alternatives to expensive hosted survey platforms with per-response limits” (62.5% of those answers) | 26.8% 95% CI 17–39.6% 15 mentions · avg pos 7.1 first pick 0% | — | GEMINI 42.9%CHATGPT 28.6%CLAUDE 28.6%PERPLEXITY 9.5% | Claim |
| 6 | PHP php.net Best for: AI recommends PHP most when buyers ask “how do I deploy a self-hosted survey tool that supports conditional logic and response exports” (62.5% of those answers) | 21.4% 95% CI 12.7–33.8% 12 mentions · avg pos 4.2 first pick 41.7% | — | GEMINI 28.6%CHATGPT 14.3%CLAUDE 42.9%PERPLEXITY 9.5% | Claim |
| 7 | Typeform typeform.com Best for: AI recommends Typeform most when buyers ask “open-source survey alternatives to expensive hosted survey platforms with per-response limits” (87.5% of those answers) | 21.4% 95% CI 12.7–33.8% 12 mentions · avg pos 6.3 first pick 25% | — | GEMINI 19%CHATGPT 28.6%CLAUDE 28.6%PERPLEXITY 19% | Claim |
| 8 | PostgreSQL postgresql.org Best for: AI recommends PostgreSQL most when buyers ask “how do I deploy a self-hosted survey tool that supports conditional logic and response exports” (50% of those answers) | 19.6% 95% CI 11.3–31.8% 11 mentions · avg pos 14.2 first pick 9.1% | — | GEMINI 14.3%CHATGPT 42.9%CLAUDE 14.3%PERPLEXITY 19% | Claim |
| 9 | MySQL mysql.com Best for: AI recommends MySQL most when buyers ask “how do I deploy a self-hosted survey tool that supports conditional logic and response exports” (62.5% of those answers) | 17.9% 95% CI 10–29.8% 10 mentions · avg pos 13.7 first pick 40% | — | GEMINI 19%CHATGPT 42.9%CLAUDE 28.6%PERPLEXITY 4.8% | Claim |
| 10 | SurveyMonkey surveymonkey.com Best for: AI recommends SurveyMonkey most when buyers ask “open-source survey alternatives to expensive hosted survey platforms with per-response limits” (75% of those answers) | 17.9% 95% CI 10–29.8% 10 mentions · avg pos 15.6 first pick 30% | — | GEMINI 14.3%CHATGPT 42.9%CLAUDE 14.3%PERPLEXITY 14.3% | Claim |
| 11 | OhMyForm Best for: AI recommends OhMyForm most when buyers ask “lightweight self-hosted survey tools for a nonprofit that needs unlimited responses on a budget” (37.5% of those answers) | 16.1% 95% CI 8.7–27.8% 9 mentions · avg pos 18.5 first pick 0% | — | GEMINI 23.8%CHATGPT 42.9%PERPLEXITY 4.8% | Claim |
| 12 | Qualtrics qualtrics.com Best for: AI recommends Qualtrics most when buyers ask “open-source survey alternatives to expensive hosted survey platforms with per-response limits” (62.5% of those answers) | 14.3% 95% CI 7.4–25.7% 8 mentions · avg pos 29.7 first pick 25% | — | CHATGPT 42.9%PERPLEXITY 23.8% | Claim |
| 13 | Nextcloud nextcloud.com Best for: AI recommends Nextcloud most when buyers ask “open-source survey alternatives to expensive hosted survey platforms with per-response limits” (50% of those answers) | 12.5% 95% CI 6.2–23.6% 7 mentions · avg pos 27 first pick 0% | — | GEMINI 9.5%CHATGPT 28.6%CLAUDE 14.3%PERPLEXITY 9.5% | Claim |
| 14 | Nextcloud Forms Best for: AI recommends Nextcloud Forms most when buyers ask “open-source survey alternatives to expensive hosted survey platforms with per-response limits” (50% of those answers) | 10.7% 95% CI 5–21.5% 6 mentions · avg pos 20.3 first pick 0% | — | GEMINI 9.5%CHATGPT 14.3%CLAUDE 14.3%PERPLEXITY 9.5% | Claim |
| 15 | Google Forms Best for: AI recommends Google Forms most when buyers ask “lightweight self-hosted survey tools for a nonprofit that needs unlimited responses on a budget” (37.5% of those answers) | 10.7% 95% CI 5–21.5% 6 mentions · avg pos 25.3 first pick 0% | — | CHATGPT 42.9%CLAUDE 14.3%PERPLEXITY 9.5% | Claim |
| 16 | NGINX nginx.org Best for: AI recommends NGINX most when buyers ask “how do I deploy a self-hosted survey tool that supports conditional logic and response exports” (75% of those answers) | 10.7% 95% CI 5–21.5% 6 mentions · avg pos 34.2 first pick 0% | — | GEMINI 4.8%CHATGPT 28.6%CLAUDE 14.3%PERPLEXITY 9.5% | Claim |
| 17 | REDCap Best for: AI recommends REDCap most when buyers ask “what open-source survey software should I use for academic research with full data ownership” (37.5% of those answers) | 8.9% 95% CI 3.9–19.3% 5 mentions · avg pos 35.3 first pick 0% | — | GEMINI 4.8%CHATGPT 57.1% | Claim |
| 18 | Surveydown Best for: AI recommends Surveydown most when buyers ask “what open-source survey software should I use for academic research with full data ownership” (37.5% of those answers) | 5.4% 95% CI 1.8–14.6% 3 mentions · avg pos 2 first pick 0% | — | PERPLEXITY 14.3% | Claim |
| 19 | Zapier AI zapier.com Best for: AI recommends Zapier AI most when buyers ask “open-source survey alternatives to expensive hosted survey platforms with per-response limits” (50% of those answers) | 5.4% 95% CI 1.8–14.6% 3 mentions · avg pos 2 first pick 0% | — | GEMINI 4.8%PERPLEXITY 9.5% | Claim |
| 20 | SoGoSurvey sogolytics.com Best for: AI recommends SoGoSurvey most when buyers ask “lightweight self-hosted survey tools for a nonprofit that needs unlimited responses on a budget” (50% of those answers) | 5.4% 95% CI 1.8–14.6% 3 mentions · avg pos 3 first pick 0% | — | CLAUDE 14.3%PERPLEXITY 9.5% | Claim |
| 21 | Checkbox | 5.4% 95% CI 1.8–14.6% 3 mentions · avg pos 4.3 first pick 0% | — | GEMINI 4.8%PERPLEXITY 9.5% | Claim |
| 22 | Open Data Kit odk.org Best for: AI recommends Open Data Kit most when buyers ask “what open-source survey software should I use for academic research with full data ownership” (37.5% of those answers) | 5.4% 95% CI 1.8–14.6% 3 mentions · avg pos 4.5 first pick 0% | — | GEMINI 4.8%CHATGPT 14.3%PERPLEXITY 4.8% | Claim |
| 23 | Typebot | 5.4% 95% CI 1.8–14.6% 3 mentions · avg pos 5 first pick 0% | — | GEMINI 9.5%PERPLEXITY 4.8% | Claim |
| 24 | HeyForm | 5.4% 95% CI 1.8–14.6% 3 mentions · avg pos 27 first pick 0% | — | CHATGPT 28.6%PERPLEXITY 4.8% | Claim |
| 25 | GuideFlow guideflow.com Best for: AI recommends GuideFlow most when buyers ask “best self-hosted survey platform for an enterprise that can't send response data to third parties” (50% of those answers) | 5.4% 95% CI 1.8–14.6% 3 mentions first pick 0% | — | PERPLEXITY 14.3% | Claim |
| 26 | SurveyPlanet surveyplanet.com | 5.4% 95% CI 1.8–14.6% 3 mentions first pick 0% | — | PERPLEXITY 14.3% | Claim |
| 27 | Slack slack.com | 3.6% 95% CI 1–12.1% 2 mentions · avg pos 2.5 first pick 0% | — | GEMINI 9.5% | Claim |
| 28 | Apache Hop apache.org Best for: AI recommends Apache Hop most when buyers ask “how do I deploy a self-hosted survey tool that supports conditional logic and response exports” (62.5% of those answers) | 3.6% 95% CI 1–12.1% 2 mentions · avg pos 10 first pick 50% | — | GEMINI 4.8%PERPLEXITY 4.8% | Claim |
| 29 | Endatix | 3.6% 95% CI 1–12.1% 2 mentions · avg pos 10.5 first pick 0% | — | GEMINI 9.5% | Claim |
| 30 | Yakforms | 3.6% 95% CI 1–12.1% 2 mentions · avg pos 20 first pick 50% | — | CHATGPT 14.3%CLAUDE 14.3% | Claim |
| 31 | Let's Encrypt letsencrypt.org | 3.6% 95% CI 1–12.1% 2 mentions · avg pos 33 first pick 0% | — | CHATGPT 14.3%CLAUDE 14.3% | Claim |
| 32 | OpenAlternative openalternative.co Best for: AI recommends OpenAlternative most when buyers ask “open-source survey alternatives to expensive hosted survey platforms with per-response limits” (50% of those answers) | 3.6% 95% CI 1–12.1% 2 mentions · avg pos 38 first pick 0% | — | CHATGPT 14.3%PERPLEXITY 4.8% | Claim |
| 33 | Google Sites sites.google.com Best for: AI recommends Google Sites most when buyers ask “open-source survey alternatives to expensive hosted survey platforms with per-response limits” (37.5% of those answers) | 3.6% 95% CI 1–12.1% 2 mentions first pick 0% | — | PERPLEXITY 9.5% | Claim |
| 34 | SourceForge sourceforge.net Best for: AI recommends SourceForge most when buyers ask “open-source survey alternatives to expensive hosted survey platforms with per-response limits” (37.5% of those answers) | 3.6% 95% CI 1–12.1% 2 mentions first pick 0% | — | PERPLEXITY 9.5% | Claim |
| 35 | Formtools formtools.org | 1.8% 95% CI 0.3–9.4% 1 mentions · avg pos 2 first pick 0% | — | GEMINI 4.8% | Claim |
| 36 | Maian Survey | 1.8% 95% CI 0.3–9.4% 1 mentions · avg pos 3 first pick 0% | — | PERPLEXITY 4.8% | Claim |
| 37 | Quackback quackback.io | 1.8% 95% CI 0.3–9.4% 1 mentions · avg pos 3 first pick 0% | — | GEMINI 4.8% | Claim |
| 38 | Surveyr | 1.8% 95% CI 0.3–9.4% 1 mentions · avg pos 6 first pick 0% | — | GEMINI 4.8% | Claim |
| 39 | BlockSurvey blocksurvey.io | 1.8% 95% CI 0.3–9.4% 1 mentions · avg pos 13 first pick 0% | — | GEMINI 4.8% | Claim |
| 40 | Railway railway.app | 1.8% 95% CI 0.3–9.4% 1 mentions · avg pos 27 first pick 0% | — | CHATGPT 14.3% | Claim |
| 41 | Alchemer alchemer.com | 1.8% 95% CI 0.3–9.4% 1 mentions · avg pos 53 first pick 0% | — | CHATGPT 14.3% | Claim |
| 42 | SurveyMonkey Enterprise Best for: AI recommends SurveyMonkey Enterprise most when buyers ask “self-hosted open-source survey tool vs hosted survey SaaS for a healthcare organization” (37.5% of those answers) | 1.8% 95% CI 0.3–9.4% 1 mentions · avg pos 54 first pick 0% | — | CHATGPT 14.3% | Claim |
| 43 | QuestionPro questionpro.com | 1.8% 95% CI 0.3–9.4% 1 mentions · avg pos 55 first pick 0% | — | CHATGPT 14.3% | Claim |
| 44 | Jotform jotform.com Best for: AI recommends Jotform most when buyers ask “self-hosted open-source survey tool vs hosted survey SaaS for a healthcare organization” (37.5% of those answers) | 1.8% 95% CI 0.3–9.4% 1 mentions first pick 0% | — | PERPLEXITY 4.8% | Claim |
| 45 | ODK Central | 1.8% 95% CI 0.3–9.4% 1 mentions first pick 0% | — | CLAUDE 14.3% | Claim |
| 46 | PrivacyTools.io privacytools.io Best for: AI recommends PrivacyTools.io most when buyers ask “how do I deploy a self-hosted survey tool that supports conditional logic and response exports” (37.5% of those answers) | 1.8% 95% CI 0.3–9.4% 1 mentions first pick 0% | — | PERPLEXITY 4.8% | Claim |
| 47 | ProProfs Survey Maker proprofssurvey.com | 1.8% 95% CI 0.3–9.4% 1 mentions first pick 0% | — | PERPLEXITY 4.8% | Claim |
| 48 | SurveyKing surveyking.com | 1.8% 95% CI 0.3–9.4% 1 mentions first pick 0% | — | PERPLEXITY 4.8% | Claim |
| 49 | Userflow userflow.com Best for: AI recommends Userflow most when buyers ask “lightweight self-hosted survey tools for a nonprofit that needs unlimited responses on a budget” (37.5% of those answers) | 1.8% 95% CI 0.3–9.4% 1 mentions first pick 0% | — | PERPLEXITY 4.8% | Claim |
| 50 | involve.me involve.me | 1.8% 95% CI 0.3–9.4% 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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