Hello, maybe there is a visual interface for creating flow by analogy with streamsets?

Not currently. We’re a code-first system and the visual representations are just a direct reflect of that code.

@schrockn Maybe you know something similar in python? How difficult do you think it will be to add CWL generation?

One could theorectically take an existing CWL workflow and ingest it into dagster. Going from dagster to CWL would be very difficult as dagster is more expressive.