Free Tools

Mini-tools that do one thing really well

Each tool is a standalone workflow powered by the OverFlow canvas. Free to use. No signup required. Bring your own database.

🗄 Database

Schema Intelligence

Connect Snowflake or BigQuery, get an interactive ERD with live data previews and AI that explains any table or relationship.

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⚗ SQL

SQL Evaluator

Test the AI Reflection pattern on your own data. Control vs Reflection. LLM Judge scores both. See if 2-pass SQL beats single-pass.

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🔀 LLM

Prompt Experimenter

Run 3 prompt or model variants simultaneously on the same input. Compare outputs and cost side by side. Pick the winner with data.

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💬 SQL

Natural Language SQL

Type a question in plain English, get production-ready SQL grounded in your real schema. Execute and see results on canvas.

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🖼 Learning

AI Diagram Generator

Type any technical topic. Get a clickable, interactive learning diagram with deep-dives on every concept. Powered by web research.

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🔜 Coming soon

More tools in progress

Data Profiler, Knowledge Base Builder, Social Publisher, and more — each powered by the OverFlow canvas.

Want to build your own?

Every tool above is a template in OverFlow. Drag nodes, connect them, and build your own workflow in minutes.

Open OverFlow free →