Open SketchUp, go to Window > Extension Manager .

Stop Searching for a Crack: The Safer Way to Get Vali Architects Tools

Vali Architects provides a yearly membership that gives users access to all their plugins for a single annual fee.

Vali Architects provides the suite, which includes specialized scripts for roofs, roads, walls, and more.

If budget is a concern, there are safer ways to enhance SketchUp without resorting to cracks: