Supabase
Windmill
| Feature | Supabase | Windmill |
|---|---|---|
| Pricing | Free / from $25/mo | Free / from $10/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.7 / 5 | 4.4 / 5 |
| Best For | developers, startups, indie-hackers, full-stack-teams | developers, devops-teams, internal-tools, data-pipelines |
| Founded | 2020 | 2022 |
| Postgres Database | ✓ | ✗ |
| Authentication | ✓ | ✗ |
| Edge Functions | ✓ | ✗ |
| Real Time | ✓ | ✗ |
| Storage | ✓ | ✗ |
| Vector Embeddings | ✓ | ✗ |
| Self Hosting | ✓ | ✗ |
| Workflow Editor | ✗ | ✓ |
| Script To Ui | ✗ | ✓ |
| Scheduling | ✗ | ✓ |
| Approval Flows | ✗ | ✓ |
| Multi Language | ✗ | ✓ |
| Self Hostable | ✗ | ✓ |
| Audit Logs | ✗ | ✓ |
✓ Supabase Pros
- Full Postgres with SQL access
- Generous free tier (500MB, 50K monthly active users)
- Auth, storage, and edge functions included
- Open-source and self-hostable
✗ Supabase Cons
- Can be complex for non-developers
- Pauses inactive free projects after 7 days
- Real-time can be expensive at scale
✓ Windmill Pros
- Open-source and self-hostable
- Supports Python, TypeScript, Go, Bash, SQL natively
- Auto-generates UI from script parameters
- Excellent scheduling and workflow orchestration
✗ Windmill Cons
- Smaller community than Zapier/n8n
- Self-hosting requires infrastructure knowledge
- Less polished documentation for beginners
The Verdict
Supabase is built for developers and startups, with a focus on postgres-database and authentication. Windmill targets developers and devops teams and leads with workflow-editor and script-to-ui.
On pricing, Windmill is the clear winner for budget-conscious users — starting at $10/mo compared to $25/mo for Supabase. That $15/mo difference adds up quickly for growing teams.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Both tools are a solid fit for developers — in those cases, the decision often comes down to workflow style and how your team prefers to organize work.
Bottom line: Supabase has a slight overall edge — but if open-source and self-hostable matters most to you, Windmill may still be the right call.