Business · Updated October 2026
Zapier is a hosted service that connects apps and automates workflows between them. If you would rather own your tools, here are 5 open source alternatives to Zapier, ranked by GitHub stars. Each one is free to use under its license, and you can read, change, and often self-host the code.
n8n is both the most popular, with 208.2k stars, and the most recently updated, with a commit on Oct 21, 2026.
| Project | Stars | License | Language | Last commit |
|---|---|---|---|---|
 n8n | 208.2k | Other | TypeScript | Oct 21, 2026 |
 Huginn | 50.1k | MIT | Ruby | Oct 18, 2026 |
 Activepieces | 25.1k | Other | TypeScript | Oct 21, 2026 |
 Windmill | 18.2k | Other | Rust | Oct 21, 2026 |
 Automatisch | 14k | Other | JavaScript | Feb 11, 2026 |
by n8n-io
Fair-code workflow automation platform with native AI capabilities. Combine visual building with custom code, self-host or cloud, 400+ integrations.
by huginn
Create agents that monitor and act on your behalf. Your agents are standing by!
by activepieces
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
by windmill-labs
Open-source developer platform to power your entire infra and turn scripts into webhooks, workflows and UIs. Fastest workflow engine (13x vs Airflow). Open-source alternative to Retool and Temporal.
by automatisch
The open source Zapier alternative. Build workflow automation without spending time and money.
By GitHub stars, n8n is the most popular open source alternative to Zapier right now, with 208.2k stars, followed by Huginn and Activepieces. The best fit depends on your setup, so compare their licenses, languages, and recent activity in the table above.
Yes. All 5 projects on this page are open source, so the software itself is free to use, study, and change. Some of them also sell a hosted version or paid support.
n8n (last commit Oct 21, 2026), Windmill (last commit Oct 21, 2026), and Activepieces (last commit Oct 21, 2026) have the most recent commits. Licenses on this list include MIT.
