I haven't seen anyone build these specific applications but I don't see anything in the way of building it. Notebooks can be shared just like any other Jupyter

I haven't seen anyone build these specific applications but I don't see anything in the way of building it. Notebooks can be shared just like any other Jupyter Notebook (charts become images unless are running the notebook). If you want something more polished, you can build a dashboard. Under the hood, Altair uses Vega-Lite so you can export your charts and embed them in a web dashboard with https://github.com/vega/vega-embed https://github.com/vega/vega-embed. To send charts, you can export them as images.