ER Designer is a professional ERD (Entity Relationship Diagram) design tool for macOS. It supports MySQL and PostgreSQL, features Crow's foot notation, and provides a native Mac experience with real-time SQL preview.

Yes, ER Designer offers a free version available on the Mac App Store. Download it to start creating professional database diagrams immediately.

What databases does ER Designer support?

ER Designer supports MySQL and PostgreSQL. It provides both forward engineering (generating SQL from diagrams) and reverse engineering (importing existing database structures).

Is ER Designer an alternative to draw.io for database diagrams?

Yes, ER Designer is a powerful alternative to draw.io specifically tailored for database diagram design. It offers Crow's foot notation, database-aware features, and native macOS performance that generic diagram tools cannot match.

ERD · Database · macOS

ER Designer

In the AI era, ER diagrams matter more than ever.

AI can help you generate code, but ER diagrams help you design the entire system. With ER Designer, visualize data relationships, organize table structures, discover connections, and plan architectures — turning complexity into clarity.

Download on the Mac App Store Download Trial Limited features · For evaluation only

Why ER Designer?

Advanced ERD visualization and professional database modeling capabilities, built natively for macOS.

Professional ER Diagram Design

Create clear visualizations of table relationships with Crow's foot notation. Design detailed physical ERD schemas with precise data types, constraints, and indexes.

MySQL / PostgreSQL Support

Full database support with intelligent structure parsing and real-time SQL preview. Design schemas that map directly to your target database system.

Forward Engineering

Generate precise database structures and SQL code directly from your visual ER diagrams — one click from design to production.

Reverse Engineering

Quickly import structures and relationships from existing databases, automatically converting them to intuitive ER diagrams.

Incremental Synchronization

Automatically create accurate SQL scripts after design changes for seamless database updates — no manual diff needed.

Native Mac Experience

Smooth touch controls, trackpad gestures and professional keyboard shortcuts. No in-app purchases or advertisements — pure professional tool.