Simple Asset Manager is an add-on for organizing and importing 3D assets within Blender. It supports objects, materials, particle systems, and HDRI environments, importing from blend, obj, fbx, hdr, and exr file formats. The tool uses a folder-based system to categorize assets, utilizing specific folder names like materials or particles to determine the correct import method. Users can configure both a global Master Library and project-specific Local Libraries. The add-on features a dynamic search bar, batch rendering for missing asset previews using EEVEE or Cycles, and can be accessed via the Viewport tool panel or bound to a custom shortcut as a popup operator.