I'm working in this area, been doing a lot of "exploratory coding" that has evolved into something I find quite powerful, a modern spreadsheet application with

I'm working in this area, been doing a lot of "exploratory coding" that has evolved into something I find quite powerful, a modern spreadsheet application with features that I think makes it suited to the current time. (Summary at https://lightsheets.app https://lightsheets.app) At the moment I'm working on improving performance. I can already load 1 million rows into it without too much trouble, and the next step is to load some Kaggle-size CSV's (e.g. 5.6 GB) and then be able to run data cleaning or other transforms on it without it choking. If anyone's interested in this kind of stuff feel free to drop me an email (in my profile)!