Grabby is a set of tools that help you select entities in more precise ways.
Filter selection by what you can see.
Tag your entities, manage your drawing.
Create scenes for each layer and hide entities based on what layer they are on.
Create Panoramic Scenes.
by DBS
Draw pipes, tubes or profiles, make documentation, create BOM and cut list
Upload your SketchUp models to the 3D (WebGL) viewing, rendering, and sharing website Sketchfab
Parametric Modeling for SketchUp
by DBS
This plugin allows to draw wire with bending on corners and show exact length of it.