Redash is an open-source tool for teams that work with SQL. In a browser-based query editor with a schema browser and auto-complete, users query more than 35 SQL and NoSQL data sources, turn results into charts and dashboards, share them, schedule refreshes and set alerts. A REST API covers everything available in the interface. The code is published under the BSD-2-Clause licence and can be run on your own infrastructure; Docker files and ready-made cloud images are provided.
Databricks, a US company, acquired Redash in June 2020. The hosted service at app.redash.io closed on 30 November 2021, and customers were pointed to Databricks SQL or to self-hosting the open-source version. Using Redash therefore now means operating it yourself, so you decide where data is processed, for instance in an EU data centre, and no data passes through a vendor-run service. The project remains under US ownership, which matters mainly for the future direction of the code.