Flowfile

Flowfile is an open-source visual ETL tool built on Polars. Users build data pipelines on a canvas, and every flow is also Python code. You can export a flow as code, or write code with the Polars-like FlowFrame API and see it appear as a visual graph. According to its author, the project exists to reduce time spent translating data problems between non-technical and technical implementations. Sometimes a visual approach works better, and sometimes code does.