Mezaphor

Cad Tools is a Blender addon from Mezaphor for working with imported CAD files. It handles cleanup and organization tasks through a dedicated panel in the 3D View sidebar, and works with regular files too.

Marker Jam (formerly Timeline Marker Groups) is a Blender add-on for organizing, managing, and exporting timeline markers. Create named groups, toggle their visibility, and import or export configurations from a panel in the Dope Sheet Editor.