A fork of the OS-Threat UI renders STIX 2.1 threat intelligence data as a collapsible indent tree in a left panel, with a separate working panel for graph exploration. The tree uses d3.tree, d3.hierarchy, and custom SVG icons to display entities like sightings, indicators, and identities, while a context menu (d3.event.preventDefault) offers node actions. The working panel applies d3.zoom for panning and scaling, and button controls switch between data categories loaded from JSON files.