iOS 11's Safe Area is a significant change to how we declare out user interfaces with Auto Layout. This article helps clarify what these changes will look like whether you use storyboards or code, and how to what extent you need to worry about backwards compatibility.
One of the biggest features in Swift 4 that hasn't gotten a whole lot of attention is support for strongly-typed KVO. Skye Freeman points out a few interesting and important changes that come along with this change.
LGButton takes away many of the pains in customizing button controls. Instead of playing around with layout constraints, custom views and CGLayers, drop this IBDesignable, fully-customizable control into Interface Builder and design it as you wish.
Managing ZIP files has never been a breeze for iOS users or developers. This Swift wrapper around Apple's
libcompression makes compressing and decompressing ZIPs easier than ever, and can even be used on Linux.