SQL Designer

SQL Designer

Free and Open Source ERD tool for MySQL and Postgres

snydi611
@snydi611
Published on May 1, 2026
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About SQL Designer

Features: Graphical designer where you can create, edit and connect tables using drag-and-drop Import and export to and from sql, txt, and json files Support for MySQL and Postgres Multiple diagrams that you can save (unlimited) Diagram sharing and realtime multiplayer

Product Insights

SQL Designer is a free, web-based platform for creating and managing entity-relationship diagrams for MySQL and Postgres databases. It provides a graphical environment for table modeling with real-time multiplayer coordination and unlimited diagram storage.

  • Supports both MySQL and Postgres database environments.
  • Enables real-time collaborative editing for developer teams.
  • Offers unlimited diagram saving and multiple file export formats including SQL, text, and JSON.
  • Entirely free and open-source software accessible via web browsers.

Ideal for: Backend developers and general developers needing a free tool to prototype database structures and collaborate on ER diagrams in real-time.

Screenshots

Screenshot 1 of SQL Designer

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