This is fully open source
Yes, NocoDB[1] allows to transform your own databases into Airtable like smart-spreadsheets. It is easy to get started - please try it out.
I played around a little and am missing actual spreadsheet functionality - like the ability to do calculations, or other manipulations that you could do on tabular data in Excel/Google Sheets (and presumably Rows). Am I missing something?
You can do calculations by creating a column with formula field.
First of all, Rows is a fantastic tool. They are really onto something, especially in how to work get structured data out of other systems into a spreadsheet and then work with that kind of data in the "spreadsheet way" that we've all been trained in. This is a pain point of current spreadsheets and one that Rows is addressing in a really nice way.
If you think about all the things that spreadsheets are used for - which is a lot - it still generally falls into one of three categories (https://medium.grid.is/the-3-types-of-spreadsheets-3d021356c...): 1. Numbers and calculations 2. Small databases 3. Business processes
What Rows does falls mostly into the realm of small databases and business processes. And while each has their own approach, I'd say that most other "next-gen spreadsheets" are also focusing on these (big and important) use-cases. Airtable (https://airtable.com/), Spreadsheet.com (https://spreadsheet.com/) and Smartsheet (https://smartsheet.com/) all play mainly in this area.
GRID is focusing on the numbers and calculations use-case, allowing people that have already built a model or pulled together numerical data in a spreadsheet to better explore, explain and converse about them.
I am not disagreeing with the languishing bit, only the hint that it had something to do with ownership.
With respect, if your BI tools look like excel, you need a better BI tool
It would be a killer product because most users are familiar with spreadsheets already. Many users end-up copying data from dashboards into spreadsheets (gsheet, excel, etc) so why not skipping the intermediaries and go straight to delivering a hybrid of dashboards and spreadsheets.
Lots of potential.