What should you compare in open-source automation?

Connectors. Failure logs. License if you host it for others

Does a sponsor change the order of this category?

No. Sponsor slots are labelled and sit outside the organic list.

Automation tools in the catalog

Workflows that connect your own systems. The useful tool is the one that connects your systems and shows why a run failed.

Compare the set

What to compare

Connectors
Failure logs
License if you host it for others

Huginn

A self-hosted automation system whose agents watch sources and trigger actions.

Stars: 50,021
Updated: 2d ago
License: MIT
Hosting: Self-hosted
Category: Automation

Website

Apache Airflow

A workflow scheduler for defining, running, and monitoring data pipelines.

Stars: 47,047
Updated: today
License: Apache-2.0
Hosting: Self-hosted
Category: Automation

Website

Kestra

Kestra orchestrates scheduled and event-driven workflows and records their executions.

Stars: 29,069
Updated: 1d ago
License: Apache-2.0
Hosting: Self-hosted
Category: Automation

Website

Activepieces

Workflow automation with a large set of pieces.

Stars: 24,824
Updated: 3d ago
License: Custom
Hosting: Both
Category: Automation

Often instead of Zapier

Website

Node-RED

Node-RED provides a visual editor for building event-driven flows from reusable nodes.

Stars: 23,708
Updated: 3d ago
License: Apache-2.0
Hosting: Self-hosted
Category: Automation

Website

Windmill

Scripts and flows turned into internal tools.

Stars: 18,073
Updated: 3d ago
License: Custom
Hosting: Both
Category: Automation

Often instead of Zapier

Website

Trigger.dev

Trigger.dev runs background jobs and long-running workflows from JavaScript and TypeScript.

Stars: 16,462
Updated: today
License: Apache-2.0
Hosting: Self-hosted
Category: Automation

Website

open-flow

Build workflows you can see, code, run, and own. Open-source visual workflow automation with real TypeScript, isolated execution, and a self-hosted Control API.

Stars: 199
Updated: today
License: Apache-2.0
Hosting: Self-hosted
Category: Automation

Website

Commercial products people replace

Zapier alternatives

Related categories

Webhooks

Questions about automation

What should you compare?: Connectors. Failure logs. License if you host it for others.
Does a sponsor change the order?: No. Sponsor slots are labelled and sit outside the organic list.

Repository activity is a signal, not a security or quality guarantee. Snapshot: October 1, 2026.