SQL Designer - Free and Open Source ERD tool for all major relational DBs
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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.
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Completely solo passion project of mine. I made it because although existing ERD tools are good, I didn't like them. Mostly because of UI and restrictions. Well, 400 hundred users tell me that I am not the only one, lol. Hopefully more people will see my project because of this launch and also will tell me how to improve it.