A web-based tool for creating Entity-Relationship diagrams with an intuitive interface.

• Create entities, relationships, and attributes
• Drag and drop interface
• Export diagrams as images
• Save and load diagrams

• /backend - API endpoints and data storage
• /frontend - Web interface and diagram editor
• /shared - Shared types and utilities

• Frontend: HTML5 Canvas, TypeScript, Tailwind CSS
• Backend: Hono.js API framework
• Storage: SQLite for diagram persistence