3 Best Open-Source Alternatives to Zapier (2026)

Last checked October 2026 · 7 alternatives to Zapier in our catalog

Zapier paid plans start at 19.99, which is why people look for an open-source alternative. Below are 3 open-source options you can inspect, modify and often self-host - 1 is completely free and 3 work in the browser.

Quick picks

No paid tier at all

n8n

Picked from listing data (price model, license, platforms, community votes), not hands-on testing.

Zapier alternatives compared

Alternative	Price	Open source	Platforms	What it is
n8n	Free	Yes (Other)	Web	Automate workflows with a fair-code licensed tool
Activepieces	Freemium	Yes	Web	Open-source no-code automation platform for building workflows
Windmill	Freemium	Yes	Web	Turn code into workflows, internal tools, and APIs instantly

n8n

FreeOpen source · OtherWeb

Automate workflows with a fair-code licensed tool

Highly customizable and extensible
Supports a wide range of integrations with popular services
Fair-code licensed, ensuring the tool remains open and community-driven

Steep learning curve for advanced features
Limited support for certain services and APIs

Full details Zapier vs n8n

Activepieces

FreemiumOpen sourceWeb

Open-source no-code automation platform for building workflows

Free plan includes: 100 credits a day · Unlimited flows · Flows, Agents, Tables, MCPs and API access · Chat to automation

Fully open-source and self‑hostable
No-code visual editor lowers entry barrier
Extensible with custom code steps

Smaller connector library than major SaaS competitors
Self‑hosting requires technical setup

Full details Zapier vs Activepieces

Windmill

FreemiumOpen sourceWeb

Turn code into workflows, internal tools, and APIs instantly

Open‑source with full code transparency
Supports multiple programming languages
Fast conversion of scripts to APIs and UI

UI is functional but not as polished as dedicated low‑code platforms
Advanced orchestration may require learning its workflow DSL

Full details Zapier vs Windmill

Frequently asked questions

What is the best free alternative to Zapier?

n8n is the first free alternative we list for Zapier and has no paid tier. Others worth a look: Activepieces and Windmill. Which one fits depends on what you use Zapier for, so check the platform and free-plan details for each.

Is there an open-source alternative to Zapier?

Yes: n8n, Activepieces and Windmill. Open-source options can usually be inspected, modified and self-hosted.

Does Zapier have a free plan?

Yes. The free plan includes Unlimited Zaps, Tables, and Forms, Two-step Zaps and Zapier Copilot*. Paid plans start at 19.99.

How this list is built: alternatives come from our catalog's curated alternative relationships; price model, license and platforms come from each product's listing; order is fully-free first, then community votes.