The original release. It introduced the revolutionary "Push/Pull" technology, allowing users to extrude 2D faces into 3D volumes instantly. There was no "SketchUp Pro" yet—just one simple tool for Windows.
The iconic blue/white logo changed to the red/black "S" we know today. sketchup version list
The branding changed instantly. The free version was now called SketchUp Google Earth Edition. The original release
The transition year. The interface remained largely the same, but the backend changed. The iconic blue/white logo changed to the red/black
Trimble Navigation acquired SketchUp from Google in April 2012. This era saw the modernization of the codebase and a shift toward cloud integration and subscription licensing.
Technically a transitional version, but released right as Trimble took over. Google sold SketchUp to Trimble Inc. in April 2012, but the first Trimble-branded version didn't drop until 2013.