Choosing the right diagramming tool for your data and cloud architectures
Ask it for lineage, not just boxes
Datadef treats tables and columns as first-class nodes, so a lineage request comes back as a graph you can edit, extend and regenerate.
No account needed · Editable canvas, not a picture
Datadef is purpose-built for data engineers and cloud architects who need specialized icons, data lineage tracking, and AI-powered architecture generation. Eraser is better suited for general software engineering teams who prioritize collaborative whiteboarding and markdown-based diagramming.
Searching for a way out rather than a scorecard? See the Eraser AI alternative page, with a live prompter to try the difference →
| Feature | Datadef | Eraser |
|---|---|---|
| AI Diagram Generation | ||
| Data Lineage Tracking | ||
| AWS/GCP/Azure Icons (2,000+) | Limited | |
| Data Tool Icons (Snowflake, dbt, etc.) | Basic | |
| Markdown Diagramming (Mermaid) | ||
| Visual Drag & Drop Editor | ||
| MCP access (Claude Code, Cursor) | External docs | |
| Real-time Collaboration | Team plan | |
| Version History | ||
| Browser-Only Scratch Canvas | ||
| Billing model | Free daily AI diagram, then a flat $8 to $12/month | Per seat plus AI credits, see current rates |
Or $96 a year ($8 a month), after a 7-day free trial. 1 AI diagram a day is free with no account.
Free to try with no account, 1 AI diagram a day. Pro is a flat $12 a month, or $8 billed yearly, with a 7-day free trial.
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