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Head-to-head · API Integration Platforms

Celigo vs Windmill

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Celigo #2 in API Integration Platforms 9.1/10 Free plan · 30-day trial Free planFree trial✓ 0 of 4 features Visit Celigo
Windmill #5 in API Integration Platforms 8.8/10 Free plan · 30-day trial Free planFree trial✓ 4 of 4 features Visit Windmill

Celigo leads on 0 checks, Windmill on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreCeligo · 9.1/10
  • Free planboth
  • Free trialboth
  • Most featuresWindmill · 4 of 4

Celigo scores higher on our rubric for api integration platforms: 9.1 against 8.8 out of 10; our editors rank them #2 and #5.

Celigo is the better fit for teams needing broad, managed API integration. Windmill is the better fit for teams wanting open-source workflow automation.

  • Celigo fits best

    Teams needing broad, managed API integration

  • Windmill fits best

    Teams wanting open-source workflow automation

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Celigo 9.1/10 Visit ↗ Windmill 8.8/10 Visit ↗
At a glance
Editor score 9.1 8.8
Ranking #2 in API Integration Platforms #5 in API Integration Platforms
Best for Teams needing broad, managed API integration Teams wanting open-source workflow automation
Pricing model Free plan + paid Free plan + paid
Starting price — $120/mo
Free plan ✓ ✓
Free trial 30 days 30 days
Free trial length 30 days 30 days
Deployment Cloud Cloud, Self-hosted
Platforms Web Web, Windows, Linux
Support Tickets, Community, Docs Email, Community, Docs, Live chat · 24/7
Compliance SOC 2, GDPR, HIPAA, SSO/SAML, 2FA SOC 2, SSO/SAML
Integrations 7 integrations 200+ integrations
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Celigo 0/4 · Windmill 4/4
Self-hosted deployment Not checked yet ✓ (best)
Custom connectors Not checked yet ✓ (best)
Webhook triggers Not checked yet ✓ (best)
Reusable workflows Not checked yet ✓ (best)
Specs
Workflow builder Not checked yet Hybrid
Included executions Not checked yet Not checked yet
Our review
Pros
  • Flow orchestration with scheduled and real-time execution
  • API building, gateway policies, plans, and developer portal
  • Hybrid connectivity with on-premises and multiple connector types
  • Free tier includes unlimited executions and self-host deployment
  • Combines code-based scripts with a low-code visual flow editor
  • Includes branches, retries, approvals, APIs, CI/CD, and observability
Cons
  • Free plan is limited to two endpoints and one flow
  • Free plan supports production environments only
  • Advanced API and governance capabilities require higher tiers
  • Enterprise features start at $120 per month
  • Named integrations are narrower than broader integration platforms
  • The hybrid workflow model may require technical ownership
Our verdict

Celigo is a cloud integration and automation platform for teams connecting applications, databases, APIs, EDI trading partners, and on-premises systems. Its flow-based approach supports data movement, mapping, transformation, branching,…

Read the review →

Windmill is an open-source workflow engine and developer platform for building API endpoints, integration workflows, internal tools, and user interfaces. It suits teams that want to combine code-based scripts with visual workflow design,…

Read the review →
  1. CeligoAPI Integration Platforms 9.1Free plan · 30-day trial
  2. WindmillAPI Integration Platforms 8.8Free plan · 30-day trial

Strengths and trade-offs

  • Celigo — where it wins

    • Flow orchestration with scheduled and real-time execution
    • API building, gateway policies, plans, and developer portal
    • Hybrid connectivity with on-premises and multiple connector types

    Where it doesn't

    • Free plan is limited to two endpoints and one flow
    • Free plan supports production environments only
    • Advanced API and governance capabilities require higher tiers

  • Windmill — where it wins

    • Free tier includes unlimited executions and self-host deployment
    • Combines code-based scripts with a low-code visual flow editor
    • Includes branches, retries, approvals, APIs, CI/CD, and observability

    Where it doesn't

    • Enterprise features start at $120 per month
    • Named integrations are narrower than broader integration platforms
    • The hybrid workflow model may require technical ownership
  • Celigo9.1/10 · Free plan · 30-day trial

    A broad integration platform covering workflows, APIs, data transformation, and hybrid connectivity.

    Visit CeligoFull verdict →
  • Windmill8.8/10 · Free plan · 30-day trial

    A flexible open-source automation platform that combines code, visual flows, and self-hosting.

    Visit WindmillFull verdict →

More comparisons

All API integration platforms comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update