The Core Animation transitions in FTUtils are very nice, take a look:
Beyond the animations, you’ll also find a handful of methods and properties for working with blocks and gestures together. There is also code for reversing the elements of NSArray and NSMutableArray objects.
You can download FTUils from github: FTUtil project.
Open Source Recommendations ?
Have you written or worked with iOS or Cocoa open source that you think others would find interesting, send me a note.