What AI assistants recommend when buyers ask about open-source developer documentation tools — measured weekly across engines, published as open data.
Sample: 49 AI answers · Window: May 21, 2026 – Jun 18, 2026 (4-week rolling)
| # | Product | Share | Trend | Engines | |
|---|---|---|---|---|---|
| 1 | Docusaurus | 93.9% avg pos 4.8 | — | GEMINI 100%CHATGPT 78.6%CLAUDE 100%PERPLEXITY 100% | Claim |
| 2 | MkDocs mkdocs.org | 87.8% avg pos 3.8 | — | GEMINI 100%CHATGPT 92.9%CLAUDE 71.4%PERPLEXITY 92.9% | Claim |
| 3 | BookStack | 46.9% avg pos 5.5 | — | GEMINI 42.9%CHATGPT 14.3%CLAUDE 50%PERPLEXITY 78.6% | Claim |
| 4 | Sphinx | 44.9% avg pos 6.3 | — | GEMINI 57.1%CHATGPT 85.7%CLAUDE 35.7%PERPLEXITY 7.1% | Claim |
| 5 | GitBook gitbook.com | 36.7% avg pos 11.1 | — | GEMINI 14.3%CHATGPT 78.6%CLAUDE 21.4%PERPLEXITY 21.4% | Claim |
| 6 | Hugo | 36.7% avg pos 12.8 | — | GEMINI 42.9%CHATGPT 50%CLAUDE 57.1% | Claim |
| 7 | Read the Docs | 34.7% avg pos 9.2 | — | GEMINI 14.3%CHATGPT 42.9%CLAUDE 7.1%PERPLEXITY 64.3% | Claim |
| 8 | Docsify | 20.4% avg pos 3.5 | — | GEMINI 14.3%CLAUDE 35.7%PERPLEXITY 28.6% | Claim |
| 9 | Redoc redoc.ly | 20.4% avg pos 3.7 | — | GEMINI 42.9%CLAUDE 21.4%PERPLEXITY 28.6% | Claim |
| 10 | ReadTheDocs readthedocs.org | 20.4% avg pos 13.1 | — | GEMINI 28.6%CHATGPT 42.9%CLAUDE 7.1%PERPLEXITY 7.1% | Claim |
| 11 | Docmost docmost.com | 18.4% avg pos 7.3 | — | GEMINI 28.6%CLAUDE 7.1%PERPLEXITY 42.9% | Claim |
| 12 | Wiki.js | 18.4% avg pos 11 | — | GEMINI 28.6%CHATGPT 21.4%CLAUDE 14.3%PERPLEXITY 14.3% | Claim |
| 13 | Material for MkDocs squidfunk.github.io | 16.3% avg pos 6.2 | — | GEMINI 71.4%CLAUDE 21.4% | Claim |
| 14 | GitHub Releases github.com | 16.3% avg pos 18.2 | — | GEMINI 28.6%CHATGPT 21.4%CLAUDE 21.4% | Claim |
| 15 | Swagger/OpenAPI swagger.io | 14.3% avg pos 5.2 | — | GEMINI 42.9%CHATGPT 14.3%CLAUDE 14.3% | Claim |
| 16 | DokuWiki | 12.2% avg pos 4.6 | — | GEMINI 14.3%CHATGPT 14.3%CLAUDE 7.1%PERPLEXITY 14.3% | Claim |
| 17 | Vitepress vitepress.dev | 12.2% avg pos 6.2 | — | GEMINI 28.6%CLAUDE 28.6% | Claim |
| 18 | Jekyll | 12.2% avg pos 16.3 | — | GEMINI 28.6%CHATGPT 21.4%CLAUDE 7.1% | Claim |
| 19 | VuePress vuepress.vuejs.org | 12.2% avg pos 20.3 | — | GEMINI 14.3%CHATGPT 28.6%CLAUDE 7.1% | Claim |
| 20 | Redocly redocly.com | 10.2% avg pos 4.7 | — | CLAUDE 14.3%PERPLEXITY 21.4% | Claim |
| 21 | Scalar | 10.2% avg pos 7 | — | GEMINI 14.3%CLAUDE 21.4%PERPLEXITY 7.1% | Claim |
| 22 | Doxygen doxygen.nl | 10.2% avg pos 8.5 | — | GEMINI 14.3%CLAUDE 21.4%PERPLEXITY 7.1% | Claim |
| 23 | DapperDox | 8.2% avg pos 3.3 | — | GEMINI 28.6%CLAUDE 7.1%PERPLEXITY 7.1% | Claim |
| 24 | Netlify netlify.com | 8.2% avg pos 8 | — | CHATGPT 14.3%CLAUDE 14.3% | Claim |
| 25 | Vercel vercel.com | 8.2% avg pos 8 | — | CHATGPT 14.3%CLAUDE 14.3% | Claim |
| 26 | GitHub Pages pages.github.com | 8.2% avg pos 10.7 | — | GEMINI 14.3%CHATGPT 14.3%CLAUDE 7.1% | Claim |
| 27 | Opsgenie atlassian.com | 8.2% avg pos 11 | — | GEMINI 14.3%CHATGPT 14.3%CLAUDE 7.1% | Claim |
| 28 | Slate slatedocs.com | 8.2% avg pos 14.7 | — | GEMINI 14.3%CHATGPT 21.4% | Claim |
| 29 | Asciidoctor asciidoctor.org | 8.2% avg pos 19.7 | — | CHATGPT 21.4%CLAUDE 7.1% | Claim |
| 30 | GitLab gitlab.com | 8.2% avg pos 31.5 | — | GEMINI 14.3%CHATGPT 7.1%CLAUDE 14.3% | Claim |
| 31 | XWiki xwiki.com | 6.1% avg pos 6.3 | — | GEMINI 14.3%CLAUDE 7.1%PERPLEXITY 7.1% | Claim |
| 32 | MediaWiki | 6.1% avg pos 7.5 | — | GEMINI 14.3%CHATGPT 14.3% | Claim |
| 33 | Notion notion.so | 6.1% avg pos 9 | — | GEMINI 28.6%PERPLEXITY 7.1% | Claim |
| 34 | Wikijs js.wiki | 6.1% avg pos 10.3 | — | GEMINI 14.3%CHATGPT 7.1%PERPLEXITY 7.1% | Claim |
| 35 | NGINX | 6.1% avg pos 17.3 | — | GEMINI 14.3%CHATGPT 7.1%CLAUDE 7.1% | Claim |
| 36 | Apache apache.org | 6.1% avg pos 18 | — | GEMINI 14.3%CHATGPT 7.1%CLAUDE 7.1% | Claim |
| 37 | Material | 4.1% avg pos 1 | — | PERPLEXITY 14.3% | Claim |
| 38 | Mintlify mintlify.com | 4.1% avg pos 1 | — | CLAUDE 7.1%PERPLEXITY 7.1% | Claim |
| 39 | HedgeDoc hedgedoc.org | 4.1% avg pos 3 | — | GEMINI 14.3%PERPLEXITY 7.1% | Claim |
| 40 | OpenAPI Generator openapi-generator.tech | 4.1% avg pos 4 | — | GEMINI 14.3%CLAUDE 7.1% | Claim |
| 41 | Stoplight stoplight.io | 4.1% avg pos 4.5 | — | GEMINI 14.3%PERPLEXITY 7.1% | Claim |
| 42 | Fern buildwithfern.com | 4.1% avg pos 6 | — | GEMINI 14.3%PERPLEXITY 7.1% | Claim |
| 43 | Starlight starlight.astro.build | 4.1% avg pos 7 | — | CLAUDE 14.3% | Claim |
| 44 | AWS SNS aws.amazon.com | 4.1% avg pos 8 | — | CHATGPT 7.1%CLAUDE 7.1% | Claim |
| 45 | DigitalOcean digitalocean.com | 4.1% avg pos 8 | — | CHATGPT 7.1%CLAUDE 7.1% | Claim |
| 46 | Confluence | 4.1% avg pos 8.5 | — | GEMINI 14.3%PERPLEXITY 7.1% | Claim |
| 47 | Outline | 4.1% avg pos 10 | — | GEMINI 28.6% | Claim |
| 48 | Jenkins Cloud jenkins.io | 4.1% avg pos 14 | — | CHATGPT 7.1%CLAUDE 7.1% | Claim |
| 49 | Gitea gitea.io | 4.1% avg pos 31 | — | CHATGPT 7.1%CLAUDE 7.1% | Claim |
| 50 | Let's Encrypt letsencrypt.org | 4.1% avg pos 34.5 | — | GEMINI 14.3%CLAUDE 7.1% | Claim |
| 51 | Documize | 4.1% | — | CLAUDE 7.1%PERPLEXITY 7.1% | Claim |
| 52 | Fumadocs fumadocs.vercel.app | 4.1% | — | CLAUDE 14.3% | Claim |
| 53 | RapiDoc | 4.1% | — | CLAUDE 14.3% | Claim |
| 54 | Git | 2% avg pos 1 | — | GEMINI 14.3% | Claim |
| 55 | Otter Wiki | 2% avg pos 1 | — | GEMINI 14.3% | Claim |
| 56 | Nextra nextra.site | 2% avg pos 6 | — | CLAUDE 7.1% | Claim |
| 57 | Hetzner hetzner.com | 2% avg pos 7 | — | CLAUDE 7.1% | Claim |
| 58 | Linode linode.com | 2% avg pos 7 | — | CLAUDE 7.1% | Claim |
| 59 | Theneo | 2% avg pos 8 | — | GEMINI 14.3% | Claim |
| 60 | mdBook rust-lang.github.io | 2% avg pos 9 | — | GEMINI 14.3% | Claim |
| 61 | OpenAPI | 2% avg pos 10 | — | CHATGPT 7.1% | Claim |
| 62 | MkDocs with Material Theme | 2% avg pos 11 | — | CLAUDE 7.1% | Claim |
| 63 | Draw.io draw.io | 2% avg pos 12 | — | GEMINI 14.3% | Claim |
| 64 | Excalidraw excalidraw.com | 2% avg pos 12 | — | GEMINI 14.3% | Claim |
| 65 | Mermaid mermaid.js.org | 2% avg pos 12 | — | GEMINI 14.3% | Claim |
| 66 | Arc | 2% avg pos 13 | — | GEMINI 14.3% | Claim |
| 67 | CircleCI circleci.com | 2% avg pos 17 | — | CHATGPT 7.1% | Claim |
| 68 | Travis CI travis-ci.com | 2% avg pos 17 | — | CHATGPT 7.1% | Claim |
| 69 | AsciiDoc | 2% avg pos 22 | — | CHATGPT 7.1% | Claim |
| 70 | Astro astro.build | 2% avg pos 25 | — | GEMINI 14.3% | Claim |
| 71 | Antora | 2% avg pos 27 | — | CHATGPT 7.1% | Claim |
| 72 | Grav getgrav.org | 2% avg pos 28 | — | CHATGPT 7.1% | Claim |
| 73 | Silex | 2% avg pos 30 | — | CHATGPT 7.1% | Claim |
| 74 | Docker docker.com | 2% avg pos 53 | — | GEMINI 14.3% | Claim |
| 75 | Algolia algolia.com | 2% | — | CLAUDE 7.1% | Claim |
| 76 | Document360 | 2% | — | PERPLEXITY 7.1% | Claim |
| 77 | Drone.io | 2% | — | CLAUDE 7.1% | Claim |
| 78 | GitHub Actions | 2% | — | CLAUDE 7.1% | Claim |
| 79 | ReadMe readme.com | 2% | — | PERPLEXITY 7.1% | Claim |
| 80 | Spotify's Backstage backstage.io | 2% | — | GEMINI 14.3% | Claim |
| 81 | Zudoku | 2% | — | CLAUDE 7.1% | Claim |
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.
Not in the answer? That's fixable.
Check Your AI Visibility →© 2026 Orbator. All rights reserved.