Hands-on, in your browser

The Lab

Reading about data is a start; working with it is the point. The Lab is where you get your hands on real datasets with real tools, right in your browser, no installs. New experiences land here over time.

Route arcs drawn by a SQL query across a map of airports

FREE · no signup

SQL Scratchpad

A full SQL editor loaded with live flight data: every airline route in America, every airport on Earth, refreshed monthly. Write any query you like; nothing leaves your browser. With a free account, upload your own CSVs and query those too.

Open the Scratchpad

The word PITFALLS in terminal block letters beside a vortex of data paths, with findings flagged on the lines falling in

PRO

Pitfall Detector

Check your own work before you share it. Upload a chart, paste a written analysis, or drop in a slide deck or analysis code, and get specific findings drawn from the taxonomy in Avoiding Data Pitfalls: what’s wrong, why it matters, and how to fix it.

Open the Pitfall Detector