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Dev tools · July 13, 2026

SQL Designer

Free and Open Source ERD tool for all major relational DBs

What it does

SQL Designer is a free, browser-based tool for visually designing database schemas. Drag out tables, define columns and relationships, and get a clean entity-relationship diagram — no install, no account needed to start. Built for developers who want to plan their data model before writing migrations.

Does a similar job

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