
Sqemo
DBDiagram.io
DrawSQL
Vertabelo
ChartDB
DbSchema
ER/Studio
erwin Data Modeler
startbase.dev
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 word list (customer → cust, number → no) and naming rules (case style, delimiter, how to handle unknown words) first. Then you model at the logical level — "Customer Number" — 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: • Logical/physical model separation with stable links between the two • SQL DDL import/export in seven dialects: MySQL, PostgreSQL, Oracle, SQL Server, SQLite, H2, CUBRID • DBML import/export — one round trip to move from dbdiagram • Runs free in the browser with no sign-up; projects autosave locally and live in a plain .erd.json file you can commit • MCP server (sqemo-mcp) with 36 tools — AI agents read and edit your ERD while following your naming standard • Team workspaces: shared standard, propose→approve queue for new words, and a compliance view showing which ERDs drift from the standard
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Sqemo
startbase.devDBDiagram.io - Free database diagrams designer for analysts & developers 🛠
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Vertabelo - Online tool for visual database design.
ChartDB - Visualize your DB via one-single query. Free and open source, database design editor.
DbSchema - DbSchema - Visual Database Design & Management Tool
ER/Studio - ER/Studio is the most comprehensive data modeling suite, connecting data modeling with data governance to deliver a future-proof framework for your enterprise’s data.