Some people use it to build text-heavy reports which are more like observable notebooks [1], and some folks use it for more grid-like dashboards [2].
We have private support for hosting - or you can just export and self-host your HTML report using our open source library: https://github.com/datapane/datapane
[1] https://datapane.com/u/khuyentran1401/reports/interactive-pl...
Here's an example notebook that shows p5.js use (with Python interop as a bonus): https://starboard.gg/nb/n3DYopT
It supports local or self-hosted editing and viewing [1] and is all open source.
[0]: https://starboard.gg [1]: https://github.com/gzuidhof/starboard-notebook and https://github.com/gzuidhof/starboard-cli
EDIT: actually you probably want https://observablehq.com/@tmcw/using-observable-with-a-local... which allows you to retreive data from localhost
Seems their platform is nice for playing, yet unable to use for professional purposes?