AI architecture diagrams vs open-source digital whiteboard
Sketch it in words
Describe the flow the way you would say it out loud. Datadef returns named nodes and directed edges that you can then move, group and label.
No account needed · Editable canvas, not a picture
tldraw is a beautiful open-source whiteboard for freehand drawing and quick sketches. Datadef is purpose-built for data and cloud architecture diagrams with AI generation, 1,200+ service icons, data lineage tracking, and auto-save versioning.
| Feature | Datadef | tldraw |
|---|---|---|
| AI Diagram Generation | ||
| Cloud Service Icons (AWS/GCP/Azure) | 1,200+ | |
| Data Lineage Tracking | ||
| Freehand Drawing | ||
| Self-Hostable | Cloud only | |
| Version History & Auto-Save | Local only | |
| Billing model | No subscription, credits for AI generation | Open source, paid commercial licence for the SDK |
tldraw is for any drawing; Datadef is optimized for data architecture with pre-built components for databases, pipelines, and cloud services.
Describe your architecture and Datadef generates a full diagram. tldraw requires you to draw everything manually.
Built-in wiki, data lineage, metadata editors, and team collaboration. tldraw is a canvas — not a documentation system.
AI-powered architecture diagrams with 1,200+ cloud icons, data lineage, and auto-documentation.
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