Open Source Alternatives

Open Source Workflow Automation Alternatives to Zapier

Workflow automation platform connecting apps.

1 drop-in replacement3 building blocks

zapier.com ↗

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Updated Jun 2026

What you gain

✓No per-task pricing starting at $19.99/mo for 750 tasks
✓Full control over automation logic without Zapier's execution limits
✓No 5-step Zap limit on lower tiers forcing plan upgrades
✓Self-hosted automation with no task volume caps

What you give up

△No 7,000+ prebuilt app integrations with managed authentication
△No Zapier Tables for no-code data storage between automations
△No AI-powered Zap builder for natural language automation creation
△No managed Paths for conditional branching in multi-step workflows

Switching Cost

Zapier's lock-in is the integration breadth. Your automation logic (if this, then that) translates to any workflow tool. But the 7,000+ prebuilt connectors with managed OAuth and error handling are Zapier's moat. Teams with 5-10 Zaps using common apps (Slack, Gmail, Sheets) can migrate in a day. Teams with hundreds of Zaps using niche app integrations should budget 2-4 weeks and expect to build custom integrations for apps the new tool doesn't support. The hidden cost is the managed auth: Zapier handles OAuth token refreshes silently, and your self-hosted tool needs that logic for every connected app.

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Drop-in Replacements

Ranked by feature coverage

n8n

7780% coverage

Fair-code workflow automation with native AI capabilities

N8n is the open source alternative to Zapier. It gives you a visual workflow builder where you drag nodes, connect them, and watch data flow through.

193.8k ★+1.1k/wkTypeScriptSustainable Use License

Building Blocks

Zapier is a platform. It bundles multiple capabilities into one subscription. These tools each cover one piece. Teams often assemble 2–3 of them instead of paying for the full suite.

Windmill

73covers: workflow automation50%

Developer platform to turn scripts into workflows and UIs

dagu

64covers: self-hosted workflows35%

Lightweight workflow engine built in a single binary with Web UI. It runs any job, scripts, containers, k8s jobs, SSH commands, or AI-agent harnesses behind MCP. Define workflows in a declarative YAML format. Linux, macOS, and Windows. Use your favorite AI agents to manage your workflows.