Outliner Model Preview is a Blender add-on from developer Shuimeng that displays a 360° preview of the selected object or collection's model directly within the Outliner. The preview sits in the Outliner alongside your scene hierarchy, tied to whatever object or collection you currently have selected.
Interaction runs through a preview toggle button. Shift + Left Click on that button opens the add-on's function panel. The extension requires no special permissions to run, and it works with Blender 4.2 LTS and newer.
Version 1.1.7 fixed an issue where the add-on failed to enable due to a missing icon in older versions. Outliner Model Preview is distributed as an extension through the blender_extensions library under the GNU General Public License v3.0 or later.