SketchUp 2016 http://www.sketchup.com/ Profile Builder 2 http://extensions.sketchup.com/en/content/profile-builder-2 ConDoc Tools http://www.condoctools.com/ Solid Inspector http://extensions.sketchup.com/en/content/solid-inspector%C2%B2 Selection Toys http://extensions.sketchup.com/en/content/selection-toys Sketchucation http://sketchucation.com/ Mirror http://sketchucation.com/pluginstore?pln=Mirror