You might be referring to me/Dud[0]. If you are, first off, thanks! I'd love to know more about what development progress you are hoping for. Is there a specific set of features that bar you from using Dud? As far as testing, Dud has a large and growing set of unit and integration tests[1] that are run in Github CI. I'll never have the same resources as Iterative/DVC, but my hope is that being open source will attract collaborators. PRs are always welcome ;)

[0]: https://github.com/kevin-hanselman/dud

[1]: https://github.com/kevin-hanselman/dud/tree/main/integration...