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Sqemo
Design databases with a shared glossary and naming rules. Logical/physical modeling, SQL and DBML import/export. Free, in your browser, no sign-up required.
Sqemo is an ERD tool built around one idea: physical names should be generated from your team's naming standard, not typed by hand.
You register a glossary (customer โ cust, number โ no) and naming rules (case style, delimiter, how to handle unknown words) first. Then you model at the logical level โ "Customer Number" โ and the physical column comes out cust_no, the same way for everyone, every time. Overrides are allowed but explicitly flagged, so they never spread silently. Because the correct name is computable, drift is detectable: an in-app linter flags deviations, and a CLI fails CI on violations (npx sqemo-mcp lint).
Key capabilities: โข Logical/physical model separation with stable links between the two โข SQL DDL import/export in seven dialects: MySQL, PostgreSQL, Oracle, SQL Server, SQLite, H2, CUBRID โข DBML import/export โ one round trip to move from dbdiagram โข Runs free in the browser with no sign-up; projects autosave locally and live in a plain .erd.json file you can commit โข MCP server (sqemo-mcp) with 33 tools โ AI agents read and edit your ERD while following your naming standard โข Team workspaces: shared standard, proposeโapprove queue for new glossary words, and a compliance view showing which ERDs drift from the standard
