The sliding effect used by folders on the iOS springboard, and other Apple apps such as the Newsstand is a great way to display information. Sliding effects are becoming an increasingly common way to display information in iOS apps.
This control is a little bit different allowing you to create a doorway effect rather than just sliding the viewcontroller in a specific direction.
Here’s a quick video demonstrating the control in action:
This control is from Jonathan Willing and you can find the Github repository with the library and a demo project
Another great sliding control.