Both Buildasaur and XcodeServerSDK need similar utilities. This is where I keep them.
The DUIToolbox is a mini library of classes useful for iOS UIKit developers.
Swift SDK for sending events to ekg, used by Buildasaur for stats. See ekg: https://github.com/czechboy0/ekg
Pure-Swift JSON parser. Linux & OS X ready. Replacement for NSJSONSerialization.
Pure-Swift implementation of a Redis client from the original protocol spec. OS X + Linux compatible.