@nick-keller, thanks for making this. I came across it a month ago and it looks very promising. It has range selection out of the box (a pro feature in some alternative solutions) and you can customize cells. However, the best example of what one could create with this is shown as a screenshot in the 'customizable' section of the landing page but there is no demo showing that this is actually possible. I think I struggled to create custom headers and header menus with this so I moved to AG-Grid and implemented my own range selection.