Google’s SketchUp Pro 6 is an enhanced version of its free SketchUp 6 program. The free version features the application’s powerful 3-D functionality, while the pro version adds two main features ...

SKP is a 3D file format that is native to SketchUp software, a 3D modeling software. Like any 3D format, SKP files also store 3D models, and they consist of sketches, layers, model information, ...