AI Index / Open-source internal tools builders

Best Open-source internal tools builders

What AI assistants actually recommend when buyers ask about open-source internal tools builders — measured on a rolling 4-week window across 4 engines, published as open data.

Updated 2026-09-18 · 28 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.

Rolling 4-week window28 samples4 enginesmethodologydata studies

Measured by Orbatormethodology owner Henrik Tellewindow ends Sep 18, 2026

Sample: 28 AI answers · Window: Aug 21, 2026Sep 18, 2026 (4-week rolling) · trend vs prior 4 weeks (98 answers)

Samples by engine: GEMINI 7 (last run Sep 6, 2026) · CHATGPT 7 (last run Sep 6, 2026) · CLAUDE 7 (last run Sep 7, 2026) · PERPLEXITY 7 (last run Sep 6, 2026) · GROK 0 (last run Aug 18, 2026 — stalest)

How these numbers are made: sampling design · prompt provenance · what counts as a mention · what we cannot see

On the record: This ranking is frozen as a dated snapshot every day. View this category's history to see what entered and left the ranking and when, or read what the engines actually said on a given day.

What is the best open-source internal tools builders?

Across 28 sampled AI answers from 4 engines, Appsmith is recommended most often — appearing in 89.3% of recommendations, followed by ToolJet (78.6%) and Budibase (78.6%).

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

How this ranking is measured

Orbator asked Gemini, ChatGPT, Claude and Perplexity buyer questions about open-source internal tools builders and sampled 28 answers between Aug 21, 2026 and Sep 18, 2026. Recommendation share counts the answers that recommended or listed a product, so a passing mention or a warning adds nothing to it. A category publishes once it holds at least 20 independently sampled answers in the window. Read the full methodology or download this ranking as CSV.

recommendedlistedneutral mentionwarned againstRecommendation share counts answers that recommend or list it — neutral mentions and warnings shown for transparency
#ProductShareTrendEngines
1

appsmith.com

89.3%

95% CI 72.896.3%

25 mentions · avg pos 1.3

first pick 60%

GEMINI 100%CHATGPT 100%CLAUDE 57.1%PERPLEXITY 100%
Claim
Pricing: Business: $15 a month (free tier available) ↗ source · verified Sep 5, 2026
Features: Audit logging ↗ source · verified Sep 5, 2026
Platforms: Self-hosting ↗ source · verified Sep 5, 2026
Integrations: Git ↗ source · verified Sep 5, 2026
2

tooljet.com

78.6%

95% CI 60.589.8%

22 mentions · avg pos 2.3

first pick 9.1%

GEMINI 100%CHATGPT 85.7%CLAUDE 42.9%PERPLEXITY 85.7%
Claim
3

budibase.com

78.6%

95% CI 60.589.8%

22 mentions · avg pos 2.6

first pick 9.1%

GEMINI 100%CHATGPT 100%CLAUDE 42.9%PERPLEXITY 71.4%
Claim
4

windmill.dev

53.6%

95% CI 35.870.5%

15 mentions · avg pos 4.1

first pick 13.3%

GEMINI 71.4%CHATGPT 71.4%CLAUDE 42.9%PERPLEXITY 28.6%
Claim
5

retool.com

35.7%

95% CI 20.754.2%

10 mentions · avg pos 1.8

first pick 50%

GEMINI 14.3%CHATGPT 85.7%CLAUDE 14.3%PERPLEXITY 28.6%
Claim
Pricing: Team: $10 a month (free tier available) ↗ source · verified Sep 5, 2026
Features: Workflow runs ↗ source · verified Sep 5, 2026
Platforms: Web ↗ source · verified Sep 5, 2026
Integrations: Terraform ↗ source · verified Sep 5, 2026
6

nocobase.com

28.6%

95% CI 15.347.1%

8 mentions · avg pos 4.9

first pick 0%

GEMINI 57.1%CLAUDE 28.6%PERPLEXITY 28.6%
Claim
7

refine.dev

28.6%

95% CI 15.347.1%

8 mentions · avg pos 5.9

first pick 0%

GEMINI 42.9%CHATGPT 42.9%PERPLEXITY 28.6%
Claim
Pricing: Starter: $0.99 a month ↗ source · verified Sep 5, 2026
Features: Web IDE ↗ source · verified Sep 5, 2026
Platforms: React ↗ source · verified Sep 5, 2026
Integrations: Okta ↗ source · verified Sep 5, 2026
8

docker.com

21.4%

95% CI 10.239.5%

6 mentions · avg pos 1.6

first pick 50%

GEMINI 28.6%CLAUDE 28.6%PERPLEXITY 28.6%
Claim
Pricing: Pro: $11 a month, $9 a year (free tier available) ↗ source · verified Sep 5, 2026
Features: Docker Desktop ↗ source · verified Sep 5, 2026
Platforms: Windows ↗ source · verified Sep 5, 2026
9

postgresql.org

17.9%

95% CI 7.935.6%

5 mentions · avg pos 3.6

first pick 0%

GEMINI 42.9%CHATGPT 14.3%CLAUDE 14.3%
Claim
Features: feature robustness ↗ source · verified Sep 5, 2026
10

baserow.io

17.9%

95% CI 7.935.6%

5 mentions · avg pos 5

first pick 0%

GEMINI 42.9%PERPLEXITY 28.6%
Claim
11

kubernetes.io

14.3%

95% CI 5.731.5%

4 mentions · avg pos 1

first pick 75%

GEMINI 14.3%CLAUDE 28.6%PERPLEXITY 14.3%
Claim
Features: Automated rollouts and rollbacks ↗ source · verified Sep 5, 2026
12

illacloud.com

14.3%

95% CI 5.731.5%

4 mentions · avg pos 3.8

first pick 0%

GEMINI 42.9%CLAUDE 14.3%
Claim
13

mongodb.com

14.3%

95% CI 5.731.5%

4 mentions · avg pos 4.8

first pick 0%

GEMINI 42.9%CLAUDE 14.3%
Claim
Pricing: M2: $9 a month (free tier available) ↗ source · verified Sep 5, 2026
Features: Graph data support ↗ source · verified Sep 5, 2026
Platforms: AWS ↗ source · verified Sep 5, 2026
Integrations: Apache Kafka ↗ source · verified Sep 5, 2026
14

mysql.com

14.3%

95% CI 5.731.5%

4 mentions · avg pos 4.8

first pick 0%

GEMINI 42.9%CLAUDE 14.3%
Claim
Features: scalability, uptime and agility ↗ source · verified Sep 5, 2026
15

airtable.com

14.3%

95% CI 5.731.5%

4 mentions · avg pos 5.8

first pick 0%

GEMINI 28.6%CHATGPT 14.3%PERPLEXITY 14.3%
Claim
Pricing: Team: $20 a month (free tier available) ↗ source · verified Sep 5, 2026
Features: Automations ↗ source · verified Sep 5, 2026
Platforms: Desktop ↗ source · verified Sep 5, 2026
Integrations: Claude ↗ source · verified Sep 5, 2026
16

nocodb.com

10.7%

95% CI 3.727.2%

3 mentions · avg pos 5.3

first pick 0%

GEMINI 14.3%CHATGPT 14.3%PERPLEXITY 14.3%
Claim
17

getmotoradmin.com

7.1%

95% CI 222.6%

2 mentions · avg pos 4

first pick 0%

PERPLEXITY 28.6%
Claim
18
AdminJS

7.1%

95% CI 222.6%

2 mentions · avg pos 5

first pick 0%

GEMINI 14.3%PERPLEXITY 14.3%
Claim
19

nodejs.org

7.1%

95% CI 222.6%

2 mentions · avg pos 5

first pick 0%

GEMINI 14.3%PERPLEXITY 14.3%
Claim
20

directus.io

7.1%

95% CI 222.6%

2 mentions · avg pos 5.5

first pick 0%

GEMINI 14.3%CHATGPT 14.3%
Claim
21

superblocks.com

3.6%

95% CI 0.617.7%

1 mentions · avg pos 2

first pick 0%

CHATGPT 14.3%
Claim
22

alternativeto.net

3.6%

95% CI 0.617.7%

1 mentions · avg pos 4

first pick 0%

PERPLEXITY 14.3%
Claim
23

reflex.dev

3.6%

95% CI 0.617.7%

1 mentions · avg pos 4

first pick 0%

GEMINI 14.3%
Claim
24

supabase.com

3.6%

95% CI 0.617.7%

1 mentions · avg pos 4

first pick 0%

GEMINI 14.3%
Claim
25
Webmin

3.6%

95% CI 0.617.7%

1 mentions · avg pos 4

first pick 0%

PERPLEXITY 14.3%
Claim
26
ISPConfig

3.6%

95% CI 0.617.7%

1 mentions · avg pos 5

first pick 0%

PERPLEXITY 14.3%
Claim
27
Kottster

3.6%

95% CI 0.617.7%

1 mentions · avg pos 5

first pick 0%

CHATGPT 14.3%
Claim
28
Lowcoder

3.6%

95% CI 0.617.7%

1 mentions · avg pos 5

first pick 0%

CHATGPT 14.3%
Claim
29
Lowdefy

3.6%

95% CI 0.617.7%

1 mentions · avg pos 5

first pick 0%

PERPLEXITY 14.3%
Claim
30

marmelab.com

3.6%

95% CI 0.617.7%

1 mentions · avg pos 6

first pick 0%

CHATGPT 14.3%
Claim
31

webstudio.is

3.6%

95% CI 0.617.7%

1 mentions · avg pos 6

first pick 0%

GEMINI 14.3%
Claim
32
UI Bakery

3.6%

95% CI 0.617.7%

1 mentions · avg pos 7

first pick 0%

GEMINI 14.3%
Claim
33

adminlte.io

3.6%

95% CI 0.617.7%

1 mentions · avg pos 9

first pick 0%

GEMINI 14.3%
Claim
34

saltcorn.com

3.6%

95% CI 0.617.7%

1 mentions

first pick 0%

PERPLEXITY 14.3%
Claim
Pricing: Saltcorn: Free ↗ source · verified Sep 5, 2026
Features: visual workflow editor builder ↗ source · verified Sep 5, 2026

Reading the numbers: Share is a point estimate on 28 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.

Watch this category

These rankings move. Get one email a week on who AI recommends in Open-source internal tools builders. No account needed.

Compare the leaders

Head-to-head pages for products ranked in Open-source internal tools builders. Each one sets out sourced facts side by side, plus which product AI assistants recommend more, engine by engine.

What the engines actually said

Every number on this page is measured from sampled answers, and those answers are kept. The archive holds dated excerpts of what each engine answered, never full answers. Read the answer archive for open-source internal tools builders to see the excerpts by date and engine, or view the ranking history to see what entered and left this ranking and when.

Questions buyers ask about Open-source internal tools builders

What is the best open-source internal tools builders?

Across 28 sampled AI answers from 4 engines (Aug 21, 2026 to Sep 18, 2026), Appsmith is recommended most often for open-source internal tools builders, appearing in 89.3% of recommendations, followed by ToolJet (78.6%). This is a measurement of what AI assistants recommend, not an editorial verdict.

What does ChatGPT recommend for open-source internal tools builders?

ChatGPT recommends Appsmith most often for open-source internal tools builders. It appears as a recommendation in 100% of ChatGPT's sampled answers in this window (Aug 21, 2026 to Sep 18, 2026). Other engines answer differently. The per-engine breakdown in the ranking shows each one.

How is this measured?

Orbator samples AI answers to buyer questions across 4 engines and counts how often each product is recommended. No product pays for placement. The open-source internal tools builders ranking is based on 28 answers in the current 4-week window (Aug 21, 2026 to Sep 18, 2026). Full methodology is published at https://www.orbator.io/ai-index/methodology.

Compare the top open-source internal tools builders side by side

Verified facts for the most-recommended products — each sourced and dated. No editorial scoring, just the data side by side.

Appsmithappsmith.comRetoolretool.comRefinerefine.devDockerdocker.comPostgreSQLpostgresql.org
PricingBusiness: $15 a month (free tier available) ↗ sourceverified Sep 5, 2026Team: $10 a month (free tier available) ↗ sourceverified Sep 5, 2026Starter: $0.99 a month ↗ sourceverified Sep 5, 2026Pro: $11 a month, $9 a year (free tier available) ↗ sourceverified Sep 5, 2026
FeaturesAudit logging ↗ sourceverified Sep 5, 2026Workflow runs ↗ sourceverified Sep 5, 2026Web IDE ↗ sourceverified Sep 5, 2026Docker Desktop ↗ sourceverified Sep 5, 2026feature robustness ↗ sourceverified Sep 5, 2026
PlatformsSelf-hosting ↗ sourceverified Sep 5, 2026Web ↗ sourceverified Sep 5, 2026React ↗ sourceverified Sep 5, 2026Windows ↗ sourceverified Sep 5, 2026
IntegrationsGit ↗ sourceverified Sep 5, 2026Terraform ↗ sourceverified Sep 5, 2026Okta ↗ sourceverified Sep 5, 2026

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