Open Source Alternatives

Open Source Workflow Automation Alternatives to Zapier

Workflow automation platform connecting apps.

2 drop-in replacements4 building blocks

zapier.com ↗

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Updated Nov 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.

Quick Compare

	n8n	activepieces
Overlap	80%	70%
Migration	moderate	moderate
License	Sustainable Use License	MIT License
Best for	Small teams	Small teams

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Drop-in Replacements

Ranked by feature coverage

n8n

7980% coverage

Fair-code workflow automation with native AI capabilities

n8n is a visual workflow automation tool, the self-hostable answer to Zapier and Make. Drag nodes onto a canvas to connect apps, APIs and AI models, drop into JavaScript or Python when the visual editor runs out, and run agents and MCP tools inside workflows.

209.7k ★+594/wkTypeScriptSustainable Use License

activepieces

8270% coverage

AI Agents & MCPs & AI Workflow Automation • (~400 MCP servers for AI agents) • AI Automation / AI Agent with MCPs • AI Workflows & AI Agents • MCPs for AI Agents

Activepieces is an open source Zapier. Connect triggers to actions across hundreds of apps, with loops, branches, approvals and a code step that takes real npm packages.

25.4k ★+105/wkTypeScriptMIT 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

78covers: workflow automation50%

Developer platform to turn scripts into workflows and UIs

camel

84covers: system integration40%

Apache Camel is an open source integration framework with 350+ connectors. Write routes in Java, YAML, or XML. Run on Spring Boot, Quarkus, or standalone. Apache License 2.0.

dagu

69covers: 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.