Seems interesting, found it on Twitter[1]. From their page:

> Macrodata Labs helps robotics teams turn raw physical-world data into better training datasets. Refiner, our open-source data processing framework, lets you build pipelines locally in Python, then scale the same pipeline on managed cloud compute.

And it looks like it's built by ex-HuggingFace people.

[1]: https://twitter.com/macrodata_labs