superset

Apache Superset is an open-source business intelligence and data visualization web application. It solves the problem of helping analysts, business users, and data teams explore their data, build charts, and assemble interactive dashboards without needing to write complex code or pay for expensive proprietary BI tools like Tableau or Looker. You connect it to your existing databases and then explore your data through a visual interface.

The platform works by connecting to any SQL-compatible database or data engine through Python database drivers and SQLAlchemy dialects (a standard library for database communication). From there, users can build charts using a drag-and-drop no-code chart builder, write custom queries in a built-in SQL editor called SQL Lab, and combine multiple charts into shareable dashboards. It supports a very wide range of databases including PostgreSQL, MySQL, BigQuery, Snowflake, Amazon Redshift, Apache Druid, and many others. A caching layer sits between Superset and your databases to avoid redundant queries and reduce load. Role-based access control lets administrators manage which users can see which data.

You would use Superset if your team needs a self-hosted alternative to commercial BI tools, wants to connect multiple data sources into one visualization platform, or needs a way to let non-engineers explore data without writing SQL. It is also suitable for organizations that want full control over their data and infrastructure. The backend is Python using the Flask web framework, the frontend is TypeScript with React, and deployment is designed to be cloud-native, typically using Docker and Kubernetes. It is an Apache Software Foundation project licensed under Apache 2.0.