Windmill vs WSO2 Micro Integrator

Windmill8.8Visit WMWSO2 Micro Integrator8.6Visit

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

vs

WM WSO2 Micro Integrator #7 in API Integration Platforms 8.6/10 Open source · 30-day trial Free trial✓ 4 of 4 features Visit WSO2

• Windmill fits best

  Teams wanting open-source workflow automation

• WSO2 Micro Integrator fits best

  Developers wanting open-source hybrid integration

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Side by side

Feature	Windmill 8.8/10 Visit ↗	WMWSO2 Micro Integrator 8.6/10 Visit ↗
At a glance
Editor score	8.8	8.6
Ranking	#5 in API Integration Platforms	#7 in API Integration Platforms
Best for	Teams wanting open-source workflow automation	Developers wanting open-source hybrid integration
Pricing model	Free plan + paid	Free
Starting price	$120/mo	Free
Free plan	✓ (best)	—
Free trial	30 days	30 days
Free trial length	30 days	30 days · no card needed
Deployment	Cloud, Self-hosted	Cloud, Self-hosted
Platforms	Web, Windows, Linux	Web, Windows, macOS, Linux
Support	Email, Community, Docs, Live chat · 24/7	Email, Community, Docs
Compliance	SOC 2, SSO/SAML	SOC 2, ISO 27001, GDPR, HIPAA, PCI DSS
Integrations	200+ integrations	10 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features Windmill 4/4 · WSO2 Micro Integrator 4/4
Self-hosted deployment	✓	✓
Custom connectors	✓	✓
Webhook triggers	✓	✓
Reusable workflows	✓	✓
Specs
Workflow builder	Hybrid	Hybrid
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	Visual and code-based development supports different integration workflows. Self-hosted, cloud, hybrid, and SaaS deployment options are available. Custom connectors, REST APIs, webhooks, and transformation support broad use cases.
Cons	Enterprise features start at $120 per month Named integrations are narrower than broader integration platforms The hybrid workflow model may require technical ownership	Growth and Enterprise plans require contact with sales. There is no perpetual free plan; the available trial lasts 30 days. Its developer and integration-team focus may not suit simple no-code projects.
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 →	WSO2 Micro Integrator is an open-source, low-code integration runtime for connecting APIs, applications, data sources, and events. It is aimed primarily at developers and integration teams building centralized ESB-style or decentralized… Read the review →

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

• WSO2 Micro Integrator — where it wins

  • Visual and code-based development supports different integration workflows.
  • Self-hosted, cloud, hybrid, and SaaS deployment options are available.
  • Custom connectors, REST APIs, webhooks, and transformation support broad use cases.

  Where it doesn't

  • Growth and Enterprise plans require contact with sales.
  • There is no perpetual free plan; the available trial lasts 30 days.
  • Its developer and integration-team focus may not suit simple no-code projects.

• 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 →
• WMWSO2 Micro Integrator8.6/10 · Open source · 30-day trial

  A developer-focused hybrid integration runtime with visual tools, code, and custom connectors.

  Visit WSO2Full verdict →