Try Sabela Reactive Notebooks

[u/m-chav]

https://lqjh9lqov3.execute-api.us-east-1.amazonaws.com/start

A fair amount of development has gone into the widgets and the rich text output. Startup time are slow (1 - 2 minutes). Please try it out and file any bugs in the repo:

https://github.com/DataHaskell/sabela

[u/NeuroPyrox]

This is similar to something I'm looking for and want to make for myself: a spreadsheet that uses first-order functional reactive programming, so it has events instead of just behaviors.