Excalidraw
Harbor
| Feature | Excalidraw | Harbor |
|---|---|---|
| Pricing | Free / from $7/mo | Free only |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.7 / 5 | 4.3 / 5 |
| Best For | developers, product-teams, educators, brainstorming-sessions | enterprise-devops, container-teams, security-teams, regulated-industries |
| Founded | 2020 | 2016 |
| Freehand Drawing | ✓ | ✗ |
| Real Time Collaboration | ✓ | ✗ |
| Component Library | ✓ | ✗ |
| Export Options | ✓ | ✗ |
| End To End Encryption | ✓ | ✗ |
| Embeddable | ✓ | ✗ |
| Shapes And Arrows | ✓ | ✗ |
| Container Registry | ✗ | ✓ |
| Vulnerability Scanning | ✗ | ✓ |
| Rbac | ✗ | ✓ |
| Image Signing | ✗ | ✓ |
| Replication | ✗ | ✓ |
| Garbage Collection | ✗ | ✓ |
| Audit Logs | ✗ | ✓ |
✓ Excalidraw Pros
- Beautiful hand-drawn sketch aesthetic
- Completely free and open source core
- Real-time collaboration with shared links
- Library of reusable components and templates
- Embeddable in other applications
✗ Excalidraw Cons
- Limited formatting compared to structured diagramming tools
- No presentation mode built-in
- File management basic without Excalidraw+
✓ Harbor Pros
- Completely free and CNCF graduated project
- Built-in vulnerability scanning (Trivy integration)
- Image signing and policy enforcement
- Multi-registry replication for geo-distribution
✗ Harbor Cons
- Requires self-hosting and infrastructure management
- UI is functional but not modern
- Initial setup complexity for production
The Verdict
Excalidraw is built for developers and product teams, with a focus on freehand-drawing and real-time-collaboration. Harbor targets enterprise devops and container teams and leads with container-registry and vulnerability-scanning.
Harbor uses custom enterprise pricing, while Excalidraw starts at $7/mo — a tangible advantage for teams with a fixed budget.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Excalidraw edges out on user ratings (4.7 vs 4.3). While both are well-regarded, that gap reflects real differences in user satisfaction worth considering.
Bottom line: Excalidraw has a slight overall edge — but if completely free and cncf graduated project matters most to you, Harbor may still be the right call.