Hello,
Actually I had the same problem, I think the best widget that exists for that right now is MultiColumnListModel.
For example, in the senders window (in attachment), the top panel is a MultiColumnListModel. You can have as many lines and as many columns as you want.
We do not have yet a tableLayout, but we miss it. If you plan to implement it, we will be interested in integrating it into Pharo.
Ben can advise you on how to implement that.
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