Automation & Integration · head to head
Windmill vs Celigo
Windmill
Automation & Integration
Open-source developer platform for building scripts, workflows, and internal apps
- From
- Free
- Rated
- -
Celigo
Automation & Integration
The iPaaS platform for mid-market and enterprise
- From
- $400/month
- Rated
- -
The short version
- Only Windmill has a free tier, so it costs nothing to try first.
- Each has a real cost: Windmill free self-hosted tier caps SSO users at 10 and workspaces at 3, requiring Enterprise for larger teams.; Celigo prices are not published on any of the three editions
- They diverge on capability: Windmill covers Script-to-workflow engine, Celigo covers App integration.
Where they differ
Only the attributes on which Windmill and Celigo actually diverge.
Identical on both: user rating (Not yet rated), category (Automation & Integration).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Windmill
- Script-to-workflow engine
- Auto-generated UIs
- Self-hosted deployment
- Git sync
- SSO support
- Audit logs
Only in Celigo
- App integration
- Process automation
- Master data management
- API management
- Workflow builder
- Error handling
- Analytics
- 800+ apps
What people use each for
The jobs each tool is most often brought in to do.
Windmill
- Turning ad-hoc scripts into scheduled jobs and APIsnot Celigo
- Building internal tools from existing Python/TypeScript codenot Celigo
- Self-hosted automation for engineering teamsnot Celigo
- Orchestrating multi-language workflowsnot Celigo
Celigo
- Integrating NetSuite with ecommerce and CRM systemsnot Windmill
- Prebuilt integration templates between common business applicationsnot Windmill
- Building custom flows between internal systemsnot Windmill
- Governance and auditability over integrations on the higher editionsnot Windmill
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Windmill
- Free self-hosted tier caps SSO users at 10 and workspaces at 3, requiring Enterprise for larger teams.
- Compute unit and seat-based pricing (developer vs. operator seats, worker compute units) adds pricing complexity beyond a flat monthly fee.
- Email triggers are capped at 100/day on the free tier, limiting event-driven use cases without upgrading.
- Smaller ecosystem of pre-built integrations compared to more established automation tools like n8n.
Celigo
- Prices are not published on any of the three editions
- Billed on endpoints and flows, so the cost is driven by how many systems you connect rather than by volume through them
- API Builder, lookup caching and a sandbox all require the Professional edition
- Single sign-on is optional on Standard and included from Professional up
- Unlimited endpoints and the full governance features are Enterprise only
Pricing, plan by plan
Windmill
Free- Free / Open-sourceFree
- Unlimited executions
- Self-hosted deployment
- Max 10 users with SSO
- Enterprise$120/month
- Unlimited executions and workspaces
- Uncapped SSO seats
- 24/7 priority support (3-hour response)
Celigo
$400/month- Growth$400/month
- 50 integrations
- Basic support
- Scale$1200/month
- Unlimited integrations
- Priority support
- Enterprise$3000/month
- Custom solutions
- Dedicated support
Which should you pick?
Choose Windmill if
- You need script-to-workflow engine.
- You want to start without paying.
- You work on web, api, linux, windows, mac.
- You also want auto-generated uis.
Choose Celigo if
- You need app integration.
- You work on Web, Mobile.
- You also want process automation.
Questions people ask
- Is Windmill or Celigo better?
- Neither clearly leads. Windmill starts at Free and Celigo at $400/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Windmill or Celigo?
- Windmill has a free tier; the other does not. Paid plans start at Free for Windmill and $400/month for Celigo.
- Does Windmill or Celigo run on more platforms?
- Windmill runs on web, api, linux, windows, mac. Celigo runs on Web, Mobile.
- Can I use Windmill for free?
- Yes. Windmill has a free tier, so you can try it without paying. Celigo starts at $400/month.
- What is Windmill best used for?
- Windmill is most often used for turning ad-hoc scripts into scheduled jobs and apis, building internal tools from existing python/typescript code, self-hosted automation for engineering teams, orchestrating multi-language workflows. Of those, turning ad-hoc scripts into scheduled jobs and apis and building internal tools from existing python/typescript code are not what Celigo is typically brought in for.
- What can Windmill do that Celigo cannot?
- Windmill covers Script-to-workflow engine, Auto-generated UIs, Self-hosted deployment, Git sync. Celigo covers App integration, Process automation, Master data management, API management.
Answered from the vendors’ own pages
Windmill: What does Windmill cost?
Windmill's Free and Open-source edition is $0/month for self-hosted use with unlimited executions, while Enterprise starts at $120/month with unlimited workspaces and uncapped SSO seats, priced further by developer/operator seats and compute units.
SourceWindmill: Is there a free plan and what are its limits?
The free self-hosted plan supports unlimited executions but caps SSO at 10 users, workspaces at 3, groups/permissions at 4, and email triggers at 100 per day.
SourceWindmill: How is usage metered on Windmill Enterprise?
Enterprise usage is metered through seats (developer seats at $20/month, operator seats at $10/month) and compute units, e.g. $100/month for 2 standard-worker compute units.
SourceWindmill: What happens to a self-hosted Windmill deployment if the company shuts down?
The pricing page addresses this directly as an FAQ topic, noting that self-hosted applications built on the open-source edition can continue running independently of Windmill the company.
SourceRelated pages
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