OpenDBD

What OpenDBD is

OpenDBD is a web-based canvas for designing database schemas, with an assistant that can work from the schema structure. Arrange tables visually on a React Flow canvas and connect them while keeping columns, types, and relationships in a structured model. Start a project from a blank canvas, a template, or an AI-generated schema. The assistant can propose tables, columns, relationships, and indexes; draft migrations and seed data; and suggest fixes when SQL fails. It supports OpenAI, Anthropic, Gemini, OpenRouter, local Ollama, and in-browser WebLLM. Export options include JSON, SQL DDL, Markdown, Mermaid ER diagrams, PNG canvas images, migration scripts, and seed scripts. Projects, schemas, chat, and notes are stored in browser IndexedDB, and the maker says the workspace is not synced to its servers. No account is required, and schemas and API keys stay in the browser. Requests go directly to the selected AI provider, which may charge for use; OpenDBD does not resell or mark up access. The free plan costs nothing.

Who it suits

It suits people who want to design schemas visually and export them in several formats. It may also suit users who want local browser storage and the option to connect their preferred listed AI provider.

Limits

The free plan costs nothing, with no seats or credit card requirement. AI usage may incur charges from the provider you enable.

Getting started

1. Visit https://www.opendb.design/.
2. Start with a blank canvas, a template, or an AI-generated starter schema.
3. Arrange and connect tables on the canvas.
4. Configure an AI provider in Agent settings if you want AI assistance.
5. Export the work as SQL DDL or another supported format.

Verdict

OpenDBD combines visual schema design, AI assistance, and a broad set of export formats in a free web app. Check provider charges and the browser-based storage model against your needs.