What is nbdev?

> nbdev is an innovative software development framework for Python that embraces literate and exploratory programming. I worked on nbdev from 2020-2023 with Jeremy Howard and, later, Wasim Lorgat. I had the privilege and excitement of exploring the boundaries of developer tools and exploratory programming while working with very talented software engineers. In addition to creating a tool many people enjoyed, I enjoyed using nbdev for personal and professional projects.

So I still wasn't sure and navigated to nbdev.fast.ai:

> Create delightful software with Jupyter Notebooks

Ah "nb" is notebook and we're talking about jupyter notebooks here!