It allows you to do on-flight data labeling, cleaning or even create new features does not exited in original dataset. Everything can be done with a brush tool(painter), You can even play with your data with your fingers on mobile.

RATH is an open-source alternative to Tableau, but with more automations. Feedbacks and suggestions are appreciated.

RATH's Github: https://github.com/Kanaries/Rath

RATH's HomePage: https://kanaries.net/