Google SketchUp is available for Windows 2000/XP/Vista and Mac OS X (10.4+) Ruby Scripts Add extra functionality to SketchUp Ruby is a programming language that anyone can use to write plugins (scripts) for Google SketchUp. Once installed, Ruby Scripts can add tools, simplify multi-step operations, and otherwise improve the way you work with SketchUp. The good news is that you don't need to know