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Head-to-head · API Integration Platforms

Windmill vs Google Cloud Application Integration

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Windmill #5 in API Integration Platforms 8.8/10 Free plan · 30-day trial Free planFree trial✓ 4 of 4 features Visit Windmill
Google Cloud Application Integration #6 in API Integration Platforms 8.7/10 Free plan Free plan✓ 3 of 4 features Visit Google Cloud

Windmill leads on 1 check, Google Cloud Application Integration on 0, and 4 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 scoreWindmill · 8.8/10
  • Free planboth
  • Free trialonly Windmill
  • Most featuresWindmill · 4 of 4

Windmill scores higher on our rubric for api integration platforms: 8.8 against 8.7 out of 10; our editors rank them #5 and #6.

On workflow builder, Windmill gives you Hybrid where Google Cloud Application Integration offers Visual. Windmill offers self-hosted deployment; Google Cloud Application Integration doesn't.

Windmill is the better fit for teams wanting open-source workflow automation. Google Cloud Application Integration is the better fit for cloud teams seeking low-cost visual integration.

  • Windmill fits best

    Teams wanting open-source workflow automation

  • Google Cloud Application Integration fits best

    Cloud teams seeking low-cost visual integration

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 Windmill 8.8/10 Visit ↗ Google Cloud Application Integration 8.7/10 Visit ↗
At a glance
Editor score 8.8 8.7
Ranking #5 in API Integration Platforms #6 in API Integration Platforms
Best for Teams wanting open-source workflow automation Cloud teams seeking low-cost visual integration
Pricing model Free plan + paid Free plan + paid
Starting price $120/mo $0.50/unit usage-based
Free plan ✓ ✓
Free trial 30 days —
Deployment Cloud, Self-hosted Cloud
Platforms Web, Windows, Linux Web
Support Email, Community, Docs, Live chat · 24/7 Community, Docs
Integrations 200+ integrations 5 integrations
Built for Solo, Small business, Mid-market, Enterprise Mid-market, Enterprise
Features Windmill 4/4 · Google Cloud Application Integration 3/4
Self-hosted deployment ✓ (best) —
Custom connectors ✓ ✓
Webhook triggers ✓ ✓
Reusable workflows ✓ ✓
Specs
Workflow builder Hybrid Visual
Included executions Not checked yet Not checked yet
Our review
Pros
  • 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
  • Free tier includes 20 GiB of monthly data processing
  • Custom OpenAPI connectors support tailored integrations
  • Visual workflows include triggers, transformations, monitoring, and logging
Cons
  • Enterprise features start at $120 per month
  • Named integrations are narrower than broader integration platforms
  • The hybrid workflow model may require technical ownership
  • Free tier is limited to integrations with Google Cloud services
  • Custom connectors are documented as a Preview feature
  • Pay-as-you-go adds connection-node, data-processing, and networking charges
Our verdict

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 →

Google Cloud Application Integration is a fully managed, serverless platform for connecting Google Cloud services, third-party SaaS applications, databases, and APIs. It is designed for integration developers, enterprise architects,…

Read the review →
  1. WindmillAPI Integration Platforms 8.8Free plan · 30-day trial
  2. Google Cloud Application IntegrationAPI Integration Platforms 8.7Free plan

Strengths and trade-offs

  • 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

  • Google Cloud Application Integration — where it wins

    • Free tier includes 20 GiB of monthly data processing
    • Custom OpenAPI connectors support tailored integrations
    • Visual workflows include triggers, transformations, monitoring, and logging

    Where it doesn't

    • Free tier is limited to integrations with Google Cloud services
    • Custom connectors are documented as a Preview feature
    • Pay-as-you-go adds connection-node, data-processing, and networking charges
  • 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 →
  • Google Cloud Application Integration8.7/10 · Free plan

    A low-cost visual integration platform with strong Google Cloud alignment and narrower coverage.

    Visit Google CloudFull 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