Open source: Workflow automation

Visual, n8n-style builders that connect apps and AI steps into automations you can host yourself.

n8nn8n-io/n8n
Automations that move data between your apps, with AI steps in the middle, on your own server.
- ★ 207,569
- Fair-code
- Last commit 16 Oct 2026
- Easy to self-host
Difylanggenius/dify
Building and sharing an internal AI assistant or workflow without writing much code.
- ★ 158,603
- Source-available
- Last commit 16 Oct 2026
- Moderate to self-host
Langflowlangflow-ai/langflow
Prototyping an agent or RAG flow visually, then using it from your own app.
- ★ 155,724
- MIT
- Last commit 16 Oct 2026
- Easy to self-host
Activepiecesactivepieces/activepieces
Zapier-style automations on your own server, with a simple editor for non-developers.
- ★ 25,063
- Open core
- Last commit 15 Oct 2026
- Moderate to self-host
Windmillwindmill-labs/windmill
Developers who want scheduled scripts and internal tools without running the plumbing themselves.
- ★ 18,197
- Open core
- Last commit 16 Oct 2026
- Moderate to self-host

Other categories

Agents and frameworks · Local LLMs · RAG and vector databases · Voice and TTS · Image and video · Dev tools

Stars, licences and commit dates come from the GitHub API, checked 16 Oct 2026. "Last commit" is the last push to the repo. Star counts are a rough popularity signal, not a quality score. There are no affiliate links in this section: links go straight to each project.