What is Apache Superset?

It is an open source business intelligence web application.
It was developed by Airbnb with the Python Flask library.
With SQL Alchemy, you can connect to multiple datasources.
You can assign roles such as Admin, Alpha, Gamma to users or create custom roles.You can create css files for your dashboards and save these css files and use them in your other dashboards.
You can write queries thanks to the SQL Editor.