DoubleCAD XT and SketchUp
«Having been here for almost seven years, I’ve concluded that there are as many SketchUp workflows as there are SketchUp users. Trying to recommend a single catch-all combination of tools and methods is like stapling Jell-O to a piece of paper — difficult, messy and ill-advised. When tools like Do…» » source | + cache
See original post by Chris Gilmer