Apache Superset

Superset is an open-source data visualization and BI tool that runs on your infrastructure. It connects to SQL and NoSQL databases, supports a wide variety of chart types, and lets you build interactive dashboards with no licensing fees. The project is maintained by the Apache Foundation and has a growing community of contributors.

It's ideal for teams who want to own their stack and avoid vendor lock-in. Compared to cloud-native BI, Superset requires more maintenance and ops overhead, but it's cost-effective at scale and integrates well into data pipelines that live on Kubernetes or Docker.