AI Index / Open-source workflow automation tools

Best Open-source workflow automation tools

What AI assistants actually recommend when buyers ask about open-source workflow automation tools — measured weekly across 4 engines, published as open data.

Updated 2026-08-04 · 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.

Updated weekly56 samples4 enginesmethodology

Sample: 56 AI answers · Window: Jul 7, 2026Aug 4, 2026 (4-week rolling) · trend vs prior 4 weeks (44 answers)

What is the best open-source workflow automation tools?

Across 56 sampled AI answers from 4 engines, n8n is recommended most often — appearing in 89.3% of recommendations, followed by Activepieces (82.1%) and Zapier AI (53.6%).

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

#ProductShareTrendEngines
1
n8n

n8n.io

Best for: AI recommends n8n most when buyers ask best open-source workflow automation tool I can self-host to replace expensive iPaaS platforms (100% of those answers)

89.3%

95% CI 78.595%

50 mentions · avg pos 2.8

first pick 52%

GEMINI 85.7%CHATGPT 100%CLAUDE 85.7%PERPLEXITY 90.5%
Claim
2
Activepieces

activepieces.com

Best for: AI recommends Activepieces most when buyers ask best open-source workflow automation tool I can self-host to replace expensive iPaaS platforms (100% of those answers)

82.1%

95% CI 70.290%

46 mentions · avg pos 3.3

first pick 28.3%

GEMINI 85.7%CHATGPT 100%CLAUDE 85.7%PERPLEXITY 71.4%
Claim
3
Zapier AI

zapier.com

Best for: AI recommends Zapier AI most when buyers ask best open-source workflow automation tool I can self-host to replace expensive iPaaS platforms (100% of those answers)

53.6%

95% CI 40.766%

30 mentions · avg pos 5.7

first pick 33.3%

GEMINI 47.6%CHATGPT 71.4%CLAUDE 71.4%PERPLEXITY 47.6%
Claim
4
Windmill

windmill.dev

Best for: AI recommends Windmill most when buyers ask open-source alternatives to popular hosted no-code automation tools (100% of those answers)

48.2%

95% CI 35.761%

27 mentions · avg pos 5.3

first pick 3.7%

GEMINI 47.6%CHATGPT 71.4%CLAUDE 57.1%PERPLEXITY 38.1%
Claim
5
Docker

docker.com

Best for: AI recommends Docker most when buyers ask how do I build a self-hosted workflow automation system for my team without sending data to third parties (100% of those answers)

48.2%

95% CI 35.761%

27 mentions · avg pos 6.4

first pick 14.8%

GEMINI 47.6%CHATGPT 100%CLAUDE 42.9%PERPLEXITY 33.3%
Claim
6
Node-RED

nodered.org

Best for: AI recommends Node-RED most when buyers ask best open-source workflow automation tool I can self-host to replace expensive iPaaS platforms (87.5% of those answers)

44.6%

95% CI 32.457.6%

25 mentions · avg pos 6.7

first pick 12%

GEMINI 47.6%CHATGPT 71.4%CLAUDE 57.1%PERPLEXITY 28.6%
Claim
7
Automate

automate.org

Best for: AI recommends Automate most when buyers ask open-source alternatives to popular hosted no-code automation tools (75% of those answers)

37.5%

95% CI 2650.6%

21 mentions · avg pos 6.4

first pick 14.3%

GEMINI 57.1%CHATGPT 42.9%CLAUDE 28.6%PERPLEXITY 19%
Claim
8
Automatisch

Best for: AI recommends Automatisch most when buyers ask which self-hosted workflow automation platform is easiest for non-developers to configure (87.5% of those answers)

35.7%

95% CI 24.548.8%

20 mentions · avg pos 5.9

first pick 10%

GEMINI 42.9%CHATGPT 14.3%CLAUDE 42.9%PERPLEXITY 33.3%
Claim
9
Make

make.com

Best for: AI recommends Make most when buyers ask best open-source workflow automation tool I can self-host to replace expensive iPaaS platforms (87.5% of those answers)

33.9%

95% CI 22.947%

19 mentions · avg pos 6.7

first pick 26.3%

GEMINI 19%CHATGPT 57.1%CLAUDE 71.4%PERPLEXITY 28.6%
Claim
10
Kestra

kestra.io

Best for: AI recommends Kestra most when buyers ask open-source alternatives to popular hosted no-code automation tools (75% of those answers)

30.4%

95% CI 19.943.3%

17 mentions · avg pos 7.4

first pick 11.8%

GEMINI 33.3%CHATGPT 14.3%CLAUDE 14.3%PERPLEXITY 38.1%
Claim
11
Apache Hop

apache.org

Best for: AI recommends Apache Hop most when buyers ask how do I build a self-hosted workflow automation system for my team without sending data to third parties (50% of those answers)

23.2%

95% CI 14.135.8%

13 mentions · avg pos 6.7

first pick 0%

GEMINI 47.6%CHATGPT 14.3%CLAUDE 28.6%
Claim
12
Temporal

temporal.io

Best for: AI recommends Temporal most when buyers ask best open-source workflow automation tool I can self-host to replace expensive iPaaS platforms (62.5% of those answers)

21.4%

95% CI 12.733.8%

12 mentions · avg pos 6.3

first pick 8.3%

GEMINI 14.3%CHATGPT 57.1%CLAUDE 14.3%PERPLEXITY 19%
Claim
13
Kubernetes

kubernetes.io

Best for: AI recommends Kubernetes most when buyers ask how do I build a self-hosted workflow automation system for my team without sending data to third parties (87.5% of those answers)

19.6%

95% CI 11.331.8%

11 mentions · avg pos 18.6

first pick 9.1%

GEMINI 14.3%CHATGPT 57.1%CLAUDE 14.3%PERPLEXITY 14.3%
Claim
14
PostgreSQL

postgresql.org

Best for: AI recommends PostgreSQL most when buyers ask how do I build a self-hosted workflow automation system for my team without sending data to third parties (87.5% of those answers)

19.6%

95% CI 11.331.8%

11 mentions · avg pos 19.1

first pick 0%

GEMINI 14.3%CHATGPT 71.4%CLAUDE 14.3%PERPLEXITY 9.5%
Claim
15
Apache Airflow

airflow.apache.org

Best for: AI recommends Apache Airflow most when buyers ask how do I build a self-hosted workflow automation system for my team without sending data to third parties (50% of those answers)

17.9%

95% CI 1029.8%

10 mentions · avg pos 7.1

first pick 0%

GEMINI 38.1%CLAUDE 28.6%
Claim
16
Huginn

Best for: AI recommends Huginn most when buyers ask open-source alternatives to popular hosted no-code automation tools (62.5% of those answers)

17.9%

95% CI 1029.8%

10 mentions · avg pos 12.4

first pick 0%

GEMINI 23.8%CHATGPT 28.6%CLAUDE 14.3%PERPLEXITY 9.5%
Claim
17
Redis

redis.io

Best for: AI recommends Redis most when buyers ask how do I build a self-hosted workflow automation system for my team without sending data to third parties (75% of those answers)

14.3%

95% CI 7.425.7%

8 mentions · avg pos 17.8

first pick 0%

GEMINI 4.8%CHATGPT 42.9%CLAUDE 14.3%PERPLEXITY 14.3%
Claim
18
Baserow

baserow.io

Best for: AI recommends Baserow most when buyers ask open-source alternatives to popular hosted no-code automation tools (50% of those answers)

12.5%

95% CI 6.223.6%

7 mentions · avg pos 2.7

first pick 28.6%

GEMINI 19%PERPLEXITY 14.3%
Claim
19
Budibase

budibase.com

Best for: AI recommends Budibase most when buyers ask open-source alternatives to popular hosted no-code automation tools (75% of those answers)

12.5%

95% CI 6.223.6%

7 mentions · avg pos 4.5

first pick 0%

GEMINI 9.5%PERPLEXITY 23.8%
Claim
20
Camunda

camunda.com

Best for: AI recommends Camunda most when buyers ask best open-source workflow automation tool I can self-host to replace expensive iPaaS platforms (50% of those answers)

12.5%

95% CI 6.223.6%

7 mentions · avg pos 6.6

first pick 14.3%

GEMINI 23.8%CHATGPT 14.3%PERPLEXITY 4.8%
Claim
21
Odoo

odoo.com

Best for: AI recommends Odoo most when buyers ask what open-source automation tool should I use to automate CRM updates and email sequences (87.5% of those answers)

12.5%

95% CI 6.223.6%

7 mentions · avg pos 8.5

first pick 14.3%

GEMINI 14.3%CHATGPT 14.3%PERPLEXITY 14.3%
Claim
22
NocoBase

nocobase.com

Best for: AI recommends NocoBase most when buyers ask open-source alternatives to popular hosted no-code automation tools (50% of those answers)

10.7%

95% CI 521.5%

6 mentions · avg pos 4

first pick 16.7%

GEMINI 14.3%PERPLEXITY 14.3%
Claim
23
NGINX

nginx.org

Best for: AI recommends NGINX most when buyers ask how do I build a self-hosted workflow automation system for my team without sending data to third parties (62.5% of those answers)

10.7%

95% CI 521.5%

6 mentions · avg pos 17.2

first pick 0%

CHATGPT 28.6%CLAUDE 14.3%PERPLEXITY 14.3%
Claim
24
HubSpot CRM

hubspot.com

Best for: AI recommends HubSpot CRM most when buyers ask what open-source automation tool should I use to automate CRM updates and email sequences (62.5% of those answers)

8.9%

95% CI 3.919.3%

5 mentions · avg pos 1

first pick 20%

GEMINI 4.8%CHATGPT 28.6%CLAUDE 14.3%PERPLEXITY 4.8%
Claim
25
SuiteCRM

suitecrm.com

Best for: AI recommends SuiteCRM most when buyers ask what open-source automation tool should I use to automate CRM updates and email sequences (62.5% of those answers)

8.9%

95% CI 3.919.3%

5 mentions · avg pos 3.4

first pick 20%

GEMINI 14.3%PERPLEXITY 9.5%
Claim
26
Appsmith

appsmith.com

Best for: AI recommends Appsmith most when buyers ask open-source alternatives to popular hosted no-code automation tools (50% of those answers)

8.9%

95% CI 3.919.3%

5 mentions · avg pos 4.2

first pick 20%

GEMINI 9.5%PERPLEXITY 14.3%
Claim
27
Git

git-scm.com

8.9%

95% CI 3.919.3%

5 mentions · avg pos 17

first pick 0%

GEMINI 9.5%CHATGPT 42.9%
Claim
28
Retool

retool.com

Best for: AI recommends Retool most when buyers ask open-source alternatives to popular hosted no-code automation tools (50% of those answers)

7.1%

95% CI 2.817%

4 mentions · avg pos 1.5

first pick 25%

CHATGPT 14.3%PERPLEXITY 14.3%
Claim
29
ToolJet

tooljet.com

Best for: AI recommends ToolJet most when buyers ask open-source alternatives to popular hosted no-code automation tools (50% of those answers)

7.1%

95% CI 2.817%

4 mentions · avg pos 4

first pick 0%

GEMINI 4.8%PERPLEXITY 14.3%
Claim
30
EspoCRM

espocrm.com

Best for: AI recommends EspoCRM most when buyers ask what open-source automation tool should I use to automate CRM updates and email sequences (50% of those answers)

7.1%

95% CI 2.817%

4 mentions · avg pos 4.3

first pick 25%

GEMINI 9.5%PERPLEXITY 9.5%
Claim
31
Mautic

mautic.org

Best for: AI recommends Mautic most when buyers ask what open-source automation tool should I use to automate CRM updates and email sequences (62.5% of those answers)

7.1%

95% CI 2.817%

4 mentions · avg pos 8.3

first pick 25%

GEMINI 14.3%CHATGPT 14.3%
Claim
32
Power Automate

Best for: AI recommends Power Automate most when buyers ask open-source alternatives to popular hosted no-code automation tools (37.5% of those answers)

7.1%

95% CI 2.817%

4 mentions · avg pos 16

first pick 0%

CHATGPT 28.6%PERPLEXITY 9.5%
Claim
33
Slack

slack.com

7.1%

95% CI 2.817%

4 mentions · avg pos 17.8

first pick 0%

CHATGPT 57.1%
Claim
34
Postgres

Best for: AI recommends Postgres most when buyers ask how do I build a self-hosted workflow automation system for my team without sending data to third parties (37.5% of those answers)

7.1%

95% CI 2.817%

4 mentions · avg pos 19

first pick 0%

CHATGPT 28.6%PERPLEXITY 9.5%
Claim
35
Prometheus

prometheus.io

7.1%

95% CI 2.817%

4 mentions · avg pos 33

first pick 0%

CHATGPT 42.9%PERPLEXITY 4.8%
Claim
36
Grafana Loki

7.1%

95% CI 2.817%

4 mentions · avg pos 33.3

first pick 0%

CHATGPT 42.9%PERPLEXITY 4.8%
Claim
37
RabbitMQ

rabbitmq.com

7.1%

95% CI 2.817%

4 mentions · avg pos 36.3

first pick 0%

CHATGPT 42.9%PERPLEXITY 4.8%
Claim
38
Vault

7.1%

95% CI 2.817%

4 mentions · avg pos 44.5

first pick 0%

CHATGPT 42.9%PERPLEXITY 4.8%
Claim
39
Airtable

airtable.com

Best for: AI recommends Airtable most when buyers ask open-source alternatives to popular hosted no-code automation tools (37.5% of those answers)

5.4%

95% CI 1.814.6%

3 mentions · avg pos 2.5

first pick 33.3%

PERPLEXITY 14.3%
Claim
40
NocoDB

nocodb.com

Best for: AI recommends NocoDB most when buyers ask open-source alternatives to popular hosted no-code automation tools (37.5% of those answers)

5.4%

95% CI 1.814.6%

3 mentions · avg pos 3

first pick 33.3%

PERPLEXITY 14.3%
Claim
41
Vellum

vellum.ai

Best for: AI recommends Vellum most when buyers ask open-source alternatives to popular hosted no-code automation tools (50% of those answers)

5.4%

95% CI 1.814.6%

3 mentions · avg pos 9

first pick 0%

GEMINI 4.8%PERPLEXITY 9.5%
Claim
42
MySQL

mysql.com

5.4%

95% CI 1.814.6%

3 mentions · avg pos 13

first pick 0%

GEMINI 4.8%CHATGPT 14.3%PERPLEXITY 4.8%
Claim
43
Home Assistant

home-assistant.io

5.4%

95% CI 1.814.6%

3 mentions · avg pos 27.3

first pick 0%

CHATGPT 42.9%
Claim
44
Dev.to

dev.to

Best for: AI recommends Dev.to most when buyers ask open-source alternatives to popular hosted no-code automation tools (50% of those answers)

5.4%

95% CI 1.814.6%

3 mentions

first pick 0%

PERPLEXITY 14.3%
Claim
45
Gobii

gobii.ai

3.6%

95% CI 112.1%

2 mentions · avg pos 3

first pick 0%

GEMINI 4.8%PERPLEXITY 4.8%
Claim
46
Prefect

prefect.io

3.6%

95% CI 112.1%

2 mentions · avg pos 5

first pick 50%

GEMINI 4.8%PERPLEXITY 4.8%
Claim
47
Keycloak

keycloak.org

3.6%

95% CI 112.1%

2 mentions · avg pos 12.5

first pick 0%

CHATGPT 14.3%PERPLEXITY 4.8%
Claim
48
AWS

aws.amazon.com

3.6%

95% CI 112.1%

2 mentions · avg pos 13

first pick 0%

GEMINI 4.8%PERPLEXITY 4.8%
Claim
49
ONES Project

ones.com

Best for: AI recommends ONES Project most when buyers ask how do I build a self-hosted workflow automation system for my team without sending data to third parties (37.5% of those answers)

3.6%

95% CI 112.1%

2 mentions

first pick 0%

PERPLEXITY 9.5%
Claim
50
Pipedream

pipedream.com

3.6%

95% CI 112.1%

2 mentions

first pick 0%

GEMINI 4.8%CHATGPT 14.3%
Claim
51
Stepper

stepper.io

Best for: AI recommends Stepper most when buyers ask which self-hosted workflow automation platform is easiest for non-developers to configure (37.5% of those answers)

3.6%

95% CI 112.1%

2 mentions

first pick 0%

PERPLEXITY 9.5%
Claim
52
Cflow

1.8%

95% CI 0.39.4%

1 mentions · avg pos 2

first pick 0%

GEMINI 4.8%
Claim
53
Vtiger

vtiger.com

1.8%

95% CI 0.39.4%

1 mentions · avg pos 2

first pick 0%

PERPLEXITY 4.8%
Claim
54
Apache NiFi

nifi.apache.org

1.8%

95% CI 0.39.4%

1 mentions · avg pos 3

first pick 0%

GEMINI 4.8%
Claim
55
OpenEMM

1.8%

95% CI 0.39.4%

1 mentions · avg pos 5

first pick 0%

GEMINI 4.8%
Claim
56
OpenPanel

openpanel.dev

1.8%

95% CI 0.39.4%

1 mentions · avg pos 5

first pick 0%

GEMINI 4.8%
Claim
57
Talend

talend.com

1.8%

95% CI 0.39.4%

1 mentions · avg pos 6

first pick 0%

GEMINI 4.8%
Claim
58
BonitaSoft

bonitasoft.com

1.8%

95% CI 0.39.4%

1 mentions · avg pos 8

first pick 0%

GEMINI 4.8%
Claim
59
StackStorm

stackstorm.com

1.8%

95% CI 0.39.4%

1 mentions · avg pos 8

first pick 0%

GEMINI 4.8%
Claim
60
Imixs-Workflow

imixs.org

1.8%

95% CI 0.39.4%

1 mentions · avg pos 9

first pick 0%

GEMINI 4.8%
Claim
61
SQLite

1.8%

95% CI 0.39.4%

1 mentions · avg pos 9

first pick 0%

GEMINI 4.8%
Claim
62
MongoDB

mongodb.com

1.8%

95% CI 0.39.4%

1 mentions · avg pos 11

first pick 0%

CHATGPT 14.3%
Claim
63
IFTTT

ifttt.com

1.8%

95% CI 0.39.4%

1 mentions · avg pos 29

first pick 0%

CHATGPT 14.3%
Claim
64
Apache Kafka

kafka.apache.org

1.8%

95% CI 0.39.4%

1 mentions · avg pos 81

first pick 0%

CHATGPT 14.3%
Claim
65
Vault by HashiCorp

vaultproject.io

1.8%

95% CI 0.39.4%

1 mentions · avg pos 93

first pick 0%

CHATGPT 14.3%
Claim
66
AccountableHQ

accountablehq.com

Best for: AI recommends AccountableHQ most when buyers ask self-hosted open-source automation for a healthcare company with strict data handling rules (37.5% of those answers)

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
67
Directus

directus.io

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
68
F6S

f6s.com

Best for: AI recommends F6S most when buyers ask how do I build a self-hosted workflow automation system for my team without sending data to third parties (37.5% of those answers)

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
69
Formbricks

formbricks.com

Best for: AI recommends Formbricks most when buyers ask open-source alternatives to popular hosted no-code automation tools (37.5% of those answers)

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
70
GitLab

gitlab.com

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

CHATGPT 14.3%
Claim
71
Gumloop

gumloop.com

Best for: AI recommends Gumloop most when buyers ask open-source alternatives to popular hosted no-code automation tools (37.5% of those answers)

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
72
Indie Hackers

indiehackers.com

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
73
Microsoft

microsoft.com

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

CHATGPT 14.3%
Claim
74
Notion AI

notion.com

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

GEMINI 4.8%
Claim
75
Nutshell

nutshell.com

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
76
React Admin

marmelab.com

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
77
SourceForge

sourceforge.net

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
78
Stripe

stripe.com

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

GEMINI 4.8%
Claim
79
The Digital Project Manager

thedigitalprojectmanager.com

1.8%

95% CI 0.39.4%

1 mentions

first pick 0%

PERPLEXITY 4.8%
Claim
80
Webstudio

webstudio.is

1.8%

95% CI 0.39.4%

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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