AI Index / AI tools for developers writing documentation

AI tools for developers writing documentation

What AI assistants recommend when buyers ask about ai tools for developers writing documentation — measured weekly across engines, published as open data.

Sample: 49 AI answers · Window: May 22, 2026Jun 19, 2026 (4-week rolling)

#ProductShareTrendEngines
1
GitHub Releases

github.com

53.1%

avg pos 5.6

CHATGPT 61.9%CLAUDE 42.9%PERPLEXITY 47.6%
Claim
2
Mintlify

mintlify.com

32.7%

avg pos 3.8

CHATGPT 14.3%CLAUDE 85.7%PERPLEXITY 33.3%
Claim
3
ChatGPT

openai.com

26.5%

avg pos 4.9

CHATGPT 33.3%CLAUDE 14.3%PERPLEXITY 23.8%
Claim
4
Opsgenie

atlassian.com

26.5%

avg pos 12.5

CHATGPT 42.9%PERPLEXITY 19%
Claim
5
Sphinx

24.5%

avg pos 4.8

CHATGPT 57.1%
Claim
6
Notion

notion.so

22.4%

avg pos 10.6

CHATGPT 38.1%PERPLEXITY 14.3%
Claim
7
ReadMe

readme.com

20.4%

avg pos 6.3

CHATGPT 19%CLAUDE 28.6%PERPLEXITY 19%
Claim
8
Document360

20.4%

avg pos 8.3

CHATGPT 9.5%CLAUDE 42.9%PERPLEXITY 23.8%
Claim
9
Docusaurus

18.4%

avg pos 3.7

CHATGPT 14.3%CLAUDE 14.3%PERPLEXITY 23.8%
Claim
10
Doxygen

doxygen.nl

18.4%

avg pos 5.1

CHATGPT 42.9%
Claim
11
GitBook

gitbook.com

18.4%

avg pos 8.3

CHATGPT 19%CLAUDE 42.9%PERPLEXITY 9.5%
Claim
12
MkDocs

mkdocs.org

16.3%

avg pos 2.9

CHATGPT 28.6%PERPLEXITY 9.5%
Claim
13
DocuWriter.ai

docuwriter.ai

12.2%

avg pos 3

CHATGPT 14.3%CLAUDE 14.3%PERPLEXITY 9.5%
Claim
14
Swimm

swimm.io

12.2%

avg pos 3

CHATGPT 14.3%CLAUDE 42.9%
Claim
15
Swagger/OpenAPI

swagger.io

10.2%

avg pos 8

CHATGPT 14.3%PERPLEXITY 9.5%
Claim
16
ReadTheDocs

readthedocs.org

10.2%

avg pos 10.4

CHATGPT 19%PERPLEXITY 4.8%
Claim
17
DocFX

dotnet.github.io

10.2%

avg pos 11.5

CHATGPT 14.3%PERPLEXITY 9.5%
Claim
18
Fern

buildwithfern.com

8.2%

avg pos 2

CLAUDE 14.3%PERPLEXITY 14.3%
Claim
19
AI README Generator

marketplace.visualstudio.com

8.2%

avg pos 2.3

CLAUDE 14.3%PERPLEXITY 14.3%
Claim
20
Read the Docs

8.2%

avg pos 4.3

CHATGPT 9.5%CLAUDE 14.3%PERPLEXITY 4.8%
Claim
21
Grammarly

grammarly.com

8.2%

avg pos 10.3

CHATGPT 4.8%PERPLEXITY 14.3%
Claim
22
Typora

typora.io

8.2%

avg pos 19

CHATGPT 19%
Claim
23
Apidog

apidog.com

8.2%

CHATGPT 14.3%CLAUDE 14.3%
Claim
24
TeamCity

jetbrains.com

6.1%

avg pos 1.5

CLAUDE 14.3%PERPLEXITY 9.5%
Claim
25
Cursor

cursor.sh

6.1%

avg pos 1.7

PERPLEXITY 14.3%
Claim
26
Readme.so

readme.so

6.1%

avg pos 2.7

CHATGPT 14.3%
Claim
27
ReadmeCodeGen

readmecodegen.com

6.1%

avg pos 3

CLAUDE 14.3%PERPLEXITY 9.5%
Claim
28
Treblle

treblle.com

6.1%

avg pos 3

PERPLEXITY 14.3%
Claim
29
NotebookLM

notebooklm.google.com

6.1%

avg pos 3.7

PERPLEXITY 14.3%
Claim
30
DeepL Write

deepl.com

6.1%

avg pos 4.3

PERPLEXITY 14.3%
Claim
31
Slate

slatedocs.com

6.1%

avg pos 11.5

CHATGPT 14.3%
Claim
32
Fern Docs

4.1%

avg pos 1

CLAUDE 28.6%
Claim
33
ReadmeAI

4.1%

avg pos 1

CLAUDE 14.3%PERPLEXITY 4.8%
Claim
34
JSDoc

4.1%

avg pos 1.5

CHATGPT 9.5%
Claim
35
Javadoc

4.1%

avg pos 1.5

CHATGPT 9.5%
Claim
36
DocGen

4.1%

avg pos 2

CHATGPT 9.5%
Claim
37
VS Code

code.visualstudio.com

4.1%

avg pos 2

CLAUDE 14.3%PERPLEXITY 4.8%
Claim
38
Anthropic Claude API

anthropic.com

4.1%

avg pos 2.5

CLAUDE 14.3%PERPLEXITY 4.8%
Claim
39
Google Docs

google.com

4.1%

avg pos 3

PERPLEXITY 9.5%
Claim
40
Qodo

4.1%

avg pos 4.5

CLAUDE 14.3%PERPLEXITY 4.8%
Claim
41
Swagger UI

4.1%

avg pos 5

CLAUDE 14.3%PERPLEXITY 4.8%
Claim
42
Bump.sh

bump.sh

4.1%

avg pos 6

PERPLEXITY 9.5%
Claim
43
ClickHelp

clickhelp.com

4.1%

avg pos 6

PERPLEXITY 9.5%
Claim
44
Redoc

redoc.ly

4.1%

avg pos 6

PERPLEXITY 9.5%
Claim
45
Stoplight Studio

4.1%

avg pos 6

PERPLEXITY 9.5%
Claim
46
Asciidoctor

asciidoctor.org

4.1%

avg pos 8.5

CHATGPT 9.5%
Claim
47
JetBrains AI Assistant

4.1%

avg pos 11

PERPLEXITY 9.5%
Claim
48
OpenAPI

4.1%

avg pos 11

CHATGPT 4.8%PERPLEXITY 4.8%
Claim
49
Tabnine

tabnine.com

4.1%

avg pos 11

PERPLEXITY 9.5%
Claim
50
Windsurf

4.1%

avg pos 11

PERPLEXITY 9.5%
Claim
51
Obsidian

obsidian.md

4.1%

avg pos 14.5

CHATGPT 9.5%
Claim
52
Scribe

4.1%

avg pos 16

CHATGPT 9.5%
Claim
53
Hugo

4.1%

avg pos 25

CHATGPT 9.5%
Claim
54
AutoDoc

fulminoussoftware.com

4.1%

CHATGPT 9.5%
Claim
55
AutomaDocs

automadocs.com

4.1%

CHATGPT 9.5%
Claim
56
Claude

claude.ai

2%

avg pos 1

PERPLEXITY 4.8%
Claim
57
Perplexity AI

perplexity.ai

2%

avg pos 1

PERPLEXITY 4.8%
Claim
58
ReadmeAI / readme-ai

2%

avg pos 1

PERPLEXITY 4.8%
Claim
59
Context7

2%

avg pos 2

PERPLEXITY 4.8%
Claim
60
Docker

docker.com

2%

avg pos 2

PERPLEXITY 4.8%
Claim
61
Ferndesk

ferndesk.com

2%

avg pos 2

PERPLEXITY 4.8%
Claim
62
Readme.io

readme.io

2%

avg pos 2

CLAUDE 14.3%
Claim
63
Alfred

2%

avg pos 3

PERPLEXITY 4.8%
Claim
64
Make a README

2%

avg pos 3

CHATGPT 4.8%
Claim
65
Augment Code

augmentcode.com

2%

avg pos 4

PERPLEXITY 4.8%
Claim
66
GitRead

gitread.dev

2%

avg pos 4

PERPLEXITY 4.8%
Claim
67
Syntha.ai

syntha.ai

2%

avg pos 4

CLAUDE 14.3%
Claim
68
Antora

2%

avg pos 5

PERPLEXITY 4.8%
Claim
69
IBM API Connect

ibm.com

2%

avg pos 5

PERPLEXITY 4.8%
Claim
70
Kapa

2%

avg pos 5

PERPLEXITY 4.8%
Claim
71
Open WebUI

2%

avg pos 5

PERPLEXITY 4.8%
Claim
72
Git

2%

avg pos 6

CHATGPT 4.8%
Claim
73
Markdownify

2%

avg pos 6

CHATGPT 4.8%
Claim
74
Swagger

2%

avg pos 6

PERPLEXITY 4.8%
Claim
75
Taskade

taskade.com

2%

avg pos 6

PERPLEXITY 4.8%
Claim
76
Fathom Video

fathom.video

2%

avg pos 7

PERPLEXITY 4.8%
Claim
77
Postman

postman.com

2%

avg pos 7

CHATGPT 4.8%
Claim
78
RapiDoc

2%

avg pos 7

PERPLEXITY 4.8%
Claim
79
WriteAssist

2%

avg pos 7

PERPLEXITY 4.8%
Claim
80
NoteGPT

2%

avg pos 8

PERPLEXITY 4.8%
Claim
81
Tango AI

2%

avg pos 8

PERPLEXITY 4.8%
Claim
82
AsciiDoc

2%

avg pos 9

CHATGPT 4.8%
Claim
83
DevDocsAI

2%

avg pos 9

PERPLEXITY 4.8%
Claim
84
GPT

2%

avg pos 9

CHATGPT 4.8%
Claim
85
TypeDoc

typedoc.org

2%

avg pos 9

CHATGPT 4.8%
Claim
86
Aider

aider.chat

2%

avg pos 10

PERPLEXITY 4.8%
Claim
87
Cline

2%

avg pos 10

PERPLEXITY 4.8%
Claim
88
Codeium

codeium.com

2%

avg pos 10

PERPLEXITY 4.8%
Claim
89
Manuscript

2%

avg pos 10

CHATGPT 4.8%
Claim
90
Nodoc

2%

avg pos 10

CHATGPT 4.8%
Claim
91
Workik

2%

avg pos 10

PERPLEXITY 4.8%
Claim
92
CodeSee

2%

avg pos 11

PERPLEXITY 4.8%
Claim
93
OpenAI Codex

2%

avg pos 11

CHATGPT 4.8%
Claim
94
GitLab

gitlab.com

2%

avg pos 12

PERPLEXITY 4.8%
Claim
95
Markdown AI

2%

avg pos 13

CHATGPT 4.8%
Claim
96
SonarQube

2%

avg pos 13

CHATGPT 4.8%
Claim
97
npm

npmjs.com

2%

avg pos 13

CHATGPT 4.8%
Claim
98
NLTK

nltk.org

2%

avg pos 14

CHATGPT 4.8%
Claim
99
spaCy

spacy.io

2%

avg pos 14

CHATGPT 4.8%
Claim
100
Dialogflow

dialogflow.cloud.google.com

2%

avg pos 16

CHATGPT 4.8%
Claim

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