SketchUp is a popular 3D modeling program used by architects, designers, and engineers to create detailed 3D models of buildings, landscapes, and interior spaces. SKP is the file extension used by SketchUp to save 3D models, and if you've received an SKP file but don't have SketchUp installed on your computer, you may be wondering how to open it. The good news is that there are a few options available. The first option is to use SketchUp's free web-based application, SketchUp Free. This allows you to upload and view SKP files directly in your web browser, without having to install any software. If you need more advanced features, you can also use the desktop version of SketchUp, which offers a 30-day free trial. Simply download and install the software, then open the SKP file from within the program. Lastly, if you only need to view the SKP file and don't plan on making any changes, you can use a free file viewer such as SketchUp Viewer. This allows you to open and interact with SKP files without the need for a SketchUp license. No matter which option you choose, opening an SKP file is relatively straightforward. Once open, you can explore the 3D model, make edits, and even export it to different file formats if needed. With these options available, you can easily collaborate with others who use SketchUp or simply view 3D models shared in the SKP file format.