[j-pb]

Hosting the notebook and hosting the development environment are two different things.

It's like saying git (observable) can't be self hosted because github (observablehq) is not open source.

[kowlo]

Just to jump in and say my comment that you said wasn't true was "... improvement over an existing literate programming environment.".

[j-pb]

I don't argue that you might find a different notebook environment more suitable. That's totally up to taste, preferences, and silly do argue about.

But observable (the reactive notebook technology) can do everything a jupyter notebook can do, you just need to write a bit of communication code to hook up a websocket. (For me sandboxing the ui is a feature not a bug.)

And you can also self host it on a machine of your choice, and edit it locally.

We do that internally for all our dashboards.