ProgressLabel

Customizable progress indicator, which displays progress by filling stroked text.

PinCodeField

Customizable pin code control, written in Swift.

ModalPresentationQueue

UIViewController extension which lets you present multiple modal view controllers in a serial presentation queue.

CAEmitterLayerExample

This app shows how to create particle emitters using Core Animation's CAEmitterLayer class

NPGradientImage-Swift

UIImage extension which lets you create gradient images