Apache Superset is a fully open-source (Apache 2.0) data exploration and visualization platform originally developed at Airbnb. No licensing costs with self-hosted deployment. The platform provides a rich visualization library (50+ chart types), SQL IDE for advanced queries, and semantic layer for business metrics definition. Supports 40+ databases through SQLAlchemy including PostgreSQL, MySQL, Presto, Trino, ClickHouse, Snowflake, BigQuery, and Druid. Dashboard building uses drag-and-drop interface with filters and cross-filtering. The Explore view enables iterative visualization building without writing SQL. No native AI features currently—the tool focuses on traditional BI capabilities. Cloud-managed offerings available through Preset (commercial Superset distribution). Self-hosted deployment requires more operational expertise than Metabase but offers greater customization. Page should cover: installation and deployment options, visualization types gallery, semantic layer configuration, SQL Lab features, comparison with Metabase, Preset managed option, and scaling considerations for enterprise deployment.