Our control of the week, MPFoldTransition, was authored by Mark Pospesel, an iOS developer in the Washington DC area. MPFoldTransition allows you to easily add custom folding transitions to UIViews and UIViewControllers. The license is described as being similar to New BSD, but with a special attribution clause.
Mark has also authored two great blog posts related to the control. The first one covers the Anatomy of a Folding Animation, and the second covers the usage of MPFoldTransition.
