Best Free & Open Source Alternatives to Zapier

Compare 7 open-source Zapier alternatives including n8n, Flowise, Apache Airflow and more

If you're looking for the best open-source alternative to Zapier, n8n is a strong place to start. If it doesn't quite fit your needs, there are plenty of other great options worth exploring, including Flowise, Apache Airflow, Kestra and Trigger.dev. We've ranked the top alternatives to help you compare your options and find the right fit.

n8n

Fair-code workflow automation platform with native AI capabilities. Combine visual building with custom code, self-host or cloud, 400+ integrations.

Alternative to:

Zapier

Flowise

Flowise is an open-source, visual, low-code/no-code tool designed to help users build AI agents and sophisticated LLM-powered workflows through a drag-and-drop interface. It features a Node.js backend and a React frontend, along with modular components for integrations and API documentation—making it accessible to both developers and non-technical users.

Alternative to:

Zapier

Apache Airflow

Apache Airflow - A platform to programmatically author, schedule, and monitor workflows

Alternative to:

Zapier

Kestra

Event-driven workflow orchestration platform with a YAML-based pipeline DSL, 500+ plugins, and a built-in UI editor.

Alternative to:

Zapier

Trigger.dev

Open-source platform for building and deploying reliable background jobs, scheduled tasks, and AI workflows in TypeScript.

Alternative to:

Zapier

Automatisch

The open source Zapier alternative. Build workflow automation without spending time and money.

Alternative to:

Zapier

Automa

Browser extension that automates repetitive web tasks by visually connecting blocks — no code required.

Alternative to:

Zapier

Frequently Asked Questions

Are there any open source alternatives to Zapier?

Yes, there are 7 open source alternatives to Zapier. Popular options include n8n, Flowise, Apache Airflow and more. These alternatives are free to use and many offer self-hosting options.

What is the best free alternative to Zapier?

The best free alternative to Zapier depends on your specific needs. n8n is a popular choice with self-hosting capabilities. All alternatives listed here are open source and free to use.

Can I self-host an alternative to Zapier?

Yes, 6 of the alternatives listed here can be self-hosted, giving you complete control over your data and privacy.

Why should I switch from Zapier to an open source alternative?

Open source alternatives to Zapier offer several advantages: no vendor lock-in, complete data ownership, no subscription fees, the ability to self-host for privacy and security, and active community support. You can also customize the software to fit your specific needs.