Demo sandbox
Try Flax with no login at /demo — it runs entirely in your browser on DuckDB-WASM, and nothing you do is saved to any server.
The public demo lets you try Flax without an account. After a one-time asset download, everything runs 100% in your browser — there is no sign-in and no server round-trip.
#How it works
The demo loads a DuckDB engine compiled to WebAssembly (DuckDB-WASM) along with a sample dataset. Your browser downloads these assets once, then all queries, edits, and charts execute locally on your machine. No request ever reaches a Flax API, and nothing you do is stored server-side.
Note
The demo is client-side by design (ADR-0051): no authentication, no /api, no persistence.
#What you can try
- Sheets — open the spreadsheet, enter formulas, and model on top of the sample data.
- Dashboards — explore prebuilt dashboards, apply filters, and cross-filter by clicking charts.
It is a faithful preview of the exploring, sheets, and visualization surfaces, running against a fixed sample dataset.
#Limitations
- No persistence. Reloading the page resets everything — your work is not saved.
- No real connections. You cannot point the demo at Postgres, Snowflake, Databricks, or BigQuery; it only uses the bundled sample data.
- No accounts or sharing. Sign-in, invitations, comments, and deliveries are not part of the demo.
To connect your own warehouse and save your work, use a real organization — start with the analyst quickstart.