Pneumatic Workflow — open-source Workflow Automation

Updated 2026-09-03 · tool · Workflow Automation · rev 1 · structured JSON

Closest standalone approval app

• Open source: yes (Apache-2.0)
• Self-hostable: yes
• Pricing model: free
• Best for: Businesses of any size needing lightweight workflow automation and task management.
• Last verified: 2026-09-04

Is Pneumatic Workflow open source?

Yes — Apache-2.0-licensed.

How much does Pneumatic Workflow cost?

It is free to use.

Can I self-host Pneumatic Workflow?

Yes — it can be self-hosted.

• Source: github · github.com/pneumaticapp
• Repository: https://github.com/pneumaticapp/pneumaticworkflow

More Workflow Automation in the registry.