BouncyLayout is an open source Swift based component from Robert-Hein Hooijmans that allows you to automatically make UICollectionView’s more dynamic by adding a bouncing effect to the layout.
BouncyLayout fully supports horizontal and vertical scrolling, and can be implemented with just a few lines of code as no configuration is required. A set of examples is included.
This animation from the readme shows what the BouncyLayout effect looks like on a grid style collection view:

You can find BouncyLayout on Github here.
A nice UICollectionView layout for easily enhancing your UICollectionViews.
Original article: BouncyLayout – Swift Based UICollectionView Layout For Easily Adding Bounce To Collection Views
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