Qt has data grids built in, but QAbstractItemModel is a nightmare to implement and interface with (https://www.reddit.com/r/QtFramework/comments/rx0c8e//hrfvyz..., https://docs.google.com/document/d/1__bldg9SwENN2d6LyiX0wwX5...). I think some of the incidental complexity could be fixed, and the implementation could definitely be simplified by removing dragging between widgets (which requires the model's backing data store be built around adding and removing items, rather than merely reordering them), but I feel it's inherently difficult to communicate changes to data to the QAbstractItemView in the form of individual insert/delete/move operations. I haven't explored the JS world's approaches to UI diffing or lazy-loaded data grids though.