This sketchup video is based on SubD. It is an organic modeling plugin as well as a parametric subdivision extension that can be utilized for generating wonderful organic models and quad-supported workflow.
The plugin is developed by Thomas Thomassen. It supports sketchup versions like SketchUp 2015, SketchUp 2016, SketchUp 2017.
There are various free tools like QuadFace Tools which can produce meshes containing quad-topology and subdivide and crease with SUbD.
Some useful features of the plugin:
1. Choose a group or component that includes only faces.
2. Toggle Subdivision on or off.
The smoothness will be modified if the number of smoothing iterations is raised or reduced.
Toggle subdivision off to come back to the control-mesh when it is necessary to edit the geometry.
Produce creases in the subdivided mesh to make the shape perfect devoid of adding additional control loops in the control mesh.
Click the following link to download the plugin evilsoftwareempire.com