The SketchUp3D Warehouse is an open source library where anyone using SketchUp can upload and download 3D models to share. 3D Warehouse was released in April 2006. The models can be downloaded right into the program without anything having to be saved onto the user's computer. File sizes of the models can be up to 50 MB. Anyone can make, modify, and reupload content to and from 3D Warehouse free of charge.