I'm a desktop Mac user and collaborate with folks on Mac/Windows/Linux; I sometimes want to whip up a quick local GUI to visualize some data (think collapsible

I'm a desktop Mac user and collaborate with folks on Mac/Windows/Linux; I sometimes want to whip up a quick local GUI to visualize some data (think collapsible treeviews, images with annotation from another file overlaid on top, etc). I've used ancient versions of Qt, Tk, web frameworks (kinda heavyweight and awkward)... I'm looking forward to giving the macOS version a spin next time the need arises!