JSON

Micro framework for easily parsing JSON in Swift 3 with rich error messages in less than 100 lines of code.

Checking in 3rd-party dependencies. – Medium

Eloy from Artsy explains how they check in 3rd-party dependencies.

Network Reachability in Swift

Network reachability is very important for mobile application. This tutorial shows you how to write a reachability class in Swift 3 for iOS.

Using Monads and Other Functional Paradigms in Practice

This talk will introduce you to Monads via the Swift syntax, show common use cases, and also why (and if!) you should care about them. 

Swift Protobuf Plugin

Apple's Swift programming language is a perfect complement to Google's Protocol Buffer serialization technology. They both emphasize high performance and programmer safety.

This project provides complete support for Protocol Buffer via a protoc plugin that is itself written entirely in Swift.

Use iPad to Program Robots with Swift Playgrounds

Apple provided playground with which you can control a Sphero SPRK+ robot (like demonstrated on WWDC)!