I have built a similar tree visualisation tool to merge categories from different e-commerce stores (turning a tree into a graph). https://tree-merge.com/mergi

I have built a similar tree visualisation tool to merge categories from different e-commerce stores (turning a tree into a graph). https://tree-merge.com/merging-categories-4-independant-diy-stores/ https://tree-merge.com/merging-categories-4-independant-diy-... The conclusion I came to here is that nested/indented lists are actually quite nice to visualise trees. JSON text is already a good visual UI.