Redash

Redash suits teams comfortable writing queries and sharing the results in a browser. It combines SQL and non-SQL data connections, charts, dashboards, scheduled refreshes and condition-based alerts. The BSD 2-Clause licence permits free self-hosted use, so server operation remains part of the work.

An administrator adds a connection under Settings > Data Sources. The getting-started guide recommends read-only database access. Choose Create > Query, run a query and inspect the returned table before creating a chart with New Visualization. Saved visualizations can then be combined under Create > Dashboard, with text where readers need context for a calculation.

For a weekly sales report, that might mean keeping the revenue query and its chart together, then scheduling refreshes at an interval that matches the source updates. The result is repeatable, but the displayed figures are only as current as the last successful refresh. Alerts can draw attention to a condition instead of requiring someone to watch the dashboard continuously.

Administrators invite colleagues through Settings > Users > New User, and recipients create an account for the instance. Dashboard sharing can also be configured separately. The REST API exposes the core operations available in the interface for teams that need automated reporting.