System Design & Architecture Modeling with Re-Editable JSON
Real-world systems change continuously. DiagramCraft ensures you can export clean `.json` project files, commit them to your Git repository alongside code, and re-open them at any time to add nodes, re-route connectors, or update cluster capacities.
1-Click Starter Topologies
Kickstart your architecture with production-proven templates for 3-Tier Web Apps, Kubernetes Clusters, AWS Multi-AZ, and Zero-Trust DMZ Ingress.
Dynamic Smart Connectors
Arrows snap to magnetic node ports and automatically recalculate their orthogonal paths when you drag nodes across the canvas.
100% Re-Editable .json
Save your project to a human-readable .json file. Re-open it anytime to adjust IP addresses, add read replicas, or rename services.
24px Snap to Grid
Keep architecture diagrams crisp, clean, and professional with automatic 24px alignment and 15-degree connector snapping.
Vector High-Res Exports
Export 2x retina PNG images for slide decks and RFC docs, or generate clean SVG files for Figma and Illustrator.
Zero-Trust Privacy
100% client-side memory execution. No network topologies, confidential IPs, or proprietary schemas are ever sent to remote servers.
DiagramCraft vs. Traditional Cloud Whiteboard Platforms
| Feature & Metric | KitWharf DiagramCraft | Lucidchart | Microsoft Visio |
|---|---|---|---|
| Account & Sign-Up | Zero account needed; opens instantly in browser | Mandatory email signup & password | Requires Microsoft 365 enterprise account |
| Re-Editability from File | 100% Re-editable .json project export and import | Saved to cloud account only | Desktop .vsdx file |
| Cost & Document Limits | 100% Free forever; unlimited boards | Hard limit of 3 editable boards on free plan | $5–$15/user/month subscription |
| Dynamic Port Connectors | Magnetic 4-port snapping; edges follow nodes on drag | Supported | Supported |
| Data Privacy | 100% Client-side RAM; zero server tracking | Stored on 3rd-party SaaS databases | Stored on OneDrive/SharePoint |
*Disclaimer: Lucidchart is a registered trademark of Lucid Software Inc. Microsoft Visio is a registered trademark of Microsoft Corporation. All third-party product names and trademarks referenced above are property of their respective owners and are used purely for factual identification and comparative review under nominative fair use.