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.
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
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