Xcode - Xcode is Apple’s powerful integrated development environment for creating great apps for Mac, iPhone, and iPad. Xcode 4 includes the Xcode IDE, instruments, iOS Simulator, and the latest Mac OS X and iOS SDKs.
Material - A beautiful graphics framework for Material Design in Swift
Swift Playgrounds - Learn serious code on your iPad in a seriously fun way
UX folio - A portfolio builder for UX designers
Angle 2 Mockups - A giant Sketch Library for creating app presentations
Bestfolios - Portfolio website and resume collection from best designers