7 self-hosted options
Self-hosted alternatives to Zapier
The best open-source alternative to Zapier is Huginn (MIT, 50,140 GitHub stars). Kestra stands out for a permissive Apache-2.0 license, and Activepieces stands out for the most commits in the last 12 months (6,472).
n8n is also listed but is source-available, so it comes after the open-source picks.
About Zapier: A no-code automation service that connects thousands of web apps with triggers and actions.
Updated · data from GitHub, refreshed daily
Top picks
- Rank 1:
Huginn
huginn/huginn
Build agents that monitor and act on your behalf.
Active · last commit Oct 24, 2026
Automation & WorkflowsRubyStands out for the most GitHub stars.
- Rank 2:
Kestra
kestra-io/kestra
Event-driven, language-agnostic platform to create, schedule, and monitor workflows. In code. Coordinate data pipelines and tasks such as ETL and ELT.
Active · last commit Oct 26, 2026
Automation & WorkflowsJavaDockerStands out for a permissive Apache-2.0 license.
- Rank 3:
Activepieces
activepieces/activepieces
No-code business automation tool like Zapier or Tray. For example, you can send a Slack notification for each new Trello card.
Active · last commit Oct 26, 2026
Automation & WorkflowsTypeScriptDockerStands out for the most commits in the last 12 months (6,472).
At a glance
Zapier alternatives compared
Open-source apps come first, then source-available ones and apps whose license appsgit could not verify; within each group, projects with at least 12 commits in the last 12 months come before less active or archived ones, then by GitHub stars.
| App | Stands out for | License | GitHub stars | Commits (12 mo) | Last commit | Docker image |
|---|---|---|---|---|---|---|
| Huginn | the most GitHub stars | MIT | 50,140 | 468 | Oct 24, 2026 | No |
| Kestra | a permissive Apache-2.0 license | Apache-2.0 | 30,000 | 5,153 | Oct 26, 2026 | Yes |
| Activepieces | the most commits in the last 12 months (6,472) | MIT | 25,228 | 6,472 | Oct 26, 2026 | Yes |
| Node RED | its JavaScript codebase | Apache-2.0 | 23,783 | 985 | Oct 24, 2026 | Yes |
| Windmill | AI features named in its own description | AGPL-3.0 | 18,269 | 4,643 | Oct 26, 2026 | Yes |
| Automatisch | – | AGPL-3.0 | 14,000 | 18 | Feb 11, 2026 | Yes |
| n8n | – | source-available, Sustainable Use License 1.0 | 208,615 | 10,189 | Oct 26, 2026 | Yes |
Full list
All 7 Zapier alternatives
Open any app for live stats, license details and a deploy option.
- 1
Huginn
Build agents that monitor and act on your behalf.
Automation & WorkflowsStands out for the most GitHub stars. Huginn has 50,140 GitHub stars, uses the MIT license and had 468 commits in the last year.
- 2
Kestra
Event-driven, language-agnostic platform to create, schedule, and monitor workflows. In code. Coordinate data pipelines and tasks such as ETL and ELT.
Automation & WorkflowsDockerStands out for a permissive Apache-2.0 license. Kestra has 30,000 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 5,153 commits in the last year.
- 3
Activepieces
No-code business automation tool like Zapier or Tray. For example, you can send a Slack notification for each new Trello card.
Automation & WorkflowsDockerAI-nativeStands out for the most commits in the last 12 months (6,472). Activepieces has 25,228 GitHub stars, uses the MIT license, ships a Docker image and had 6,472 commits in the last year.
- 4
Node RED
Browser-based flow editor that helps you wiring hardware devices, APIs and online services to create IoT solutions.
Home Automation & IoTDockerStands out for its JavaScript codebase. Node RED has 23,783 GitHub stars, uses the Apache-2.0 license, ships a Docker image and had 985 commits in the last year.
- 5
Windmill
Fast workflow engine and internal tool builder that turns scripts into UIs and automations.
Automation & WorkflowsDockerAI-nativeStands out for AI features named in its own description. Windmill has 18,269 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 4,643 commits in the last year.
- 6
Automatisch
Business automation tool that lets you connect different services like Twitter, Slack, and more to automate your business processes (alternative to Zapier).
Automation & WorkflowsDockerAutomatisch has 14,000 GitHub stars, uses the AGPL-3.0 license, ships a Docker image and had 18 commits in the last year.
- 7
n8nFeatured
Free node based Workflow Automation Tool. Easily automate tasks across different services.
Source-availableAutomation & WorkflowsDockern8n has 208,615 GitHub stars, is source-available under the Sustainable Use License 1.0 (not an open-source license), ships a Docker image and had 10,189 commits in the last year.
Is there a free alternative to Zapier?
Yes. 6 of the 7 apps on this page are open source; 1 is source-available. The open-source ones are free to self-host without per-user fees; source-available licenses add conditions such as user caps or limits on hosted use, so read them before you commit.
Can I self-host an alternative to Zapier with Docker?
Yes. 6 of the 7 apps here publish a Docker image, including Kestra, Activepieces and Node RED, so you can run them on a home server or VPS with Docker Compose.
Which Zapier alternative is the most actively developed?
n8n (source-available) (source-available, Sustainable Use License 1.0), with 10,189 commits in the last 12 months. Activity is a good sign that bugs and security issues get fixed.
How is this list ranked?
Open-source apps come first, then source-available ones and apps whose license appsgit could not verify; within each group, projects with at least 12 commits in the last 12 months come before less active or archived ones, then by GitHub stars.