While v3.1a is completely free, it does not receive updates or bug fixes. The official paid versions (v3.4a, v3.5a, v3.6a) include refinements, better performance, and ongoing support. The author, Fredo6, offered his tools free for over a decade and now relies on license purchases to continue development.

is a highly intuitive, free extension designed specifically for bending instances in SketchUp.

Go to Sketchucation.com and register — this is free and takes only a minute.