Although officially supported through SketchUp 2015, many users report it still functions in newer versions like SketchUp 2023. However, some community members on SketchUp Forums
A robust, free version containing a vast array of essential tools for stairs, windows, doors, and walls. 1001bit tools plugin sketchup verified
The plugin is divided into several logical categories that streamline different stages of architectural design: Although officially supported through SketchUp 2015